US6077244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter insertion device with retractable needle
Assignee: MDC Investment Holdings Inc
•
Filing: 1998-04-30
•
Granted: 2000-06-20
•
Expires: 2018-04-30
Abstract
Abstract A catheter insertion device is provided for inserting an over-the-needle catheter. The device includes an insertion needle that is retractable into the housing of the device after use to prevent exposure to the contaminated needle. A needle retainer releasably retains the needle in an extended position against the rearward bias of the biasing element. The needle retainer engages the hub of the catheter so that when the catheter is removed from the insertion device, the needle retainer automatically releases the needle. The biasing element then propels the needle rearwardly into the housing of the device.
Inventors
- 👤 Michael J. Botich
- 👤 Thor R. Halseth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M25/0612; A61M25/0631; A61M25/0043; A61M2025/006; A61M25/0693; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/322; A61M5/3232
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
160 words
A medical device, comprising: a hollow housing; a catheter mounted on the housing; a needle having a sharpened tip operable between an extended position extending forwarding from the housing and a retracted position in which the sharpened tip of the needle is enclosed in the housing; a biasing element biasing the needle toward the retracted position; and a lever mounted on the housing, pivotable between a locked positioned and an unlocked position, wherein the lever has a forward portion and a rearward portion, the forward portion directly engaging the catheter preventing the lever from pivoting into the unlocked position, and the rearward portion being connected with the rearward end of the needle retaining the needle against the bias of the biasing element; wherein upon removal of the catheter from the housing the catheter disengages the lever allowing the lever to pivot into the unlocked position thereby releasing the needle and the biasing element propels the needle rearwardly into the housing.
Claim 2
Dependent Claim
160 words
A medical device, comprising: a hollow housing; a catheter mounted on the housing; a needle having a sharpened tip operable between an extended position extending forwarding from the housing and a retracted position in which the sharpened tip of the needle is enclosed in the housing; a biasing element biasing the needle toward the retracted position; and a lever mounted on the housing, pivotable between a locked positioned and an unlocked position, wherein the lever has a forward portion and a rearward portion, the forward portion directly engaging the catheter preventing the lever from pivoting into the unlocked position, and the rearward portion being connected with the rearward end of the needle retaining the needle against the bias of the biasing element; wherein upon removal of the catheter from the housing the catheter disengages the lever allowing the lever to pivot into the unlocked position thereby releasing the needle and the biasing element propels the needle rearwardly into the housing.
Claim 3
Dependent Claim
69 words
The medical device of claim 1 wherein the catheter is operable between a mounted position in which the catheter is mounted on the housing, and a removed position in which the catheter is removed from the housing, wherein the device comprises an indicator associated with the catheter operable to provide an indication signal when the catheter is displaced into a position intermediate the mounted position and the removed position.
Claim 4
Dependent Claim
14 words
The medical device of claim 2 wherein the indication signal is audible or tactile.
Claim 5
Dependent Claim
12 words
The medical device of claim 2 wherein the indication signal is visual.
Claim 6
Dependent Claim
20 words
The medical device of claim 2 wherein the indicator comprises a recess in the catheter that cooperates with the lever.
Claim 7
Dependent Claim
28 words
The medical device of claim 1 wherein catheter has an internal surface and an external surface, and the forward portion of the lever engages the catheter external surface.
Claim 8
Dependent Claim
16 words
The medical device of claim 1 comprising a fluid chamber in fluid communication with the needle.
Claim 9
Dependent Claim
15 words
The medical device of claim 1 wherein the lever is fixedly connected to the housing.
Claim 10
Dependent Claim
25 words
The medical device of claim 1 comprising a guard for preventing manual operation of at least a part of the rearward portion of the lever.
Claim 11
Dependent Claim
19 words
The medical device of claim 1 wherein the rearward portion of the lever is spaced rearwardly from the catheter.
Claim 12
Dependent Claim
124 words
A medical device comprising: a body; a needle projecting from the body; a releasable member removably attached to the body; a needle retainer engaging the releasably member, comprising a pivotable arm operable between a locked positioned and a released position, the needle retainer engaging the needle when the arm is in the locked position so that the needle projects forwardly from the body, and the needle retainer releasing the needle when the arm is in the released position, wherein the needle retainer is biased toward the released position; and a biasing element biasing the needle rearwardly, wherein the releasable member impedes movement of the arm into the released position and removal of the releasable member allows the arm to pivot into the released position.
Claim 13
Dependent Claim
124 words
A medical device comprising: a body; a needle projecting from the body; a releasable member removably attached to the body; a needle retainer engaging the releasably member, comprising a pivotable arm operable between a locked positioned and a released position, the needle retainer engaging the needle when the arm is in the locked position so that the needle projects forwardly from the body, and the needle retainer releasing the needle when the arm is in the released position, wherein the needle retainer is biased toward the released position; and a biasing element biasing the needle rearwardly, wherein the releasable member impedes movement of the arm into the released position and removal of the releasable member allows the arm to pivot into the released position.
Claim 14
Dependent Claim
36 words
The medical device of claim 11 wherein the needle retainer comprises a forward portion engaging the releasable member and a rearward portion retaining the needle, wherein the rearward portion is spaced rearwardly from the releasable member.
Claim 15
Dependent Claim
18 words
The medical device of claim 12 wherein at least part of the rearward portion projects into the housing.
Claim 16
Dependent Claim
20 words
The medical device of claim 12 wherein the forward portion and the rearward portion of the needle retainer are integral.
Claim 17
Dependent Claim
25 words
The medial device of claim 12 comprising a guard for preventing manual operation of at least part of the rearward portion of the needle retainer.
Claim 18
Dependent Claim
30 words
The medical device of claim 12 wherein the catheter has an internal surface and an external surface and the forward portion of the needle retainer engages the catheter external surface.
Claim 19
Dependent Claim
69 words
The medical device of claim 11 wherein the catheter is operable between a mounted position in which the catheter is mounted on the housing, and a removed position in which the catheter is removed from the housing, wherein the device comprises an indicator associated with the catheter operable to provide an indication signal when the catheter is displaced into a position intermediate the mounted position and the removed position.
Claim 20
Dependent Claim
14 words
The medical device of claim 17 wherein the indication signal is audible or tactile.
Claim 21
Dependent Claim
12 words
The medical device of claim 17 wherein the indication signal is visual.
Claim 22
Dependent Claim
21 words
The medical device of claim 17 wherein the indicator comprises a recess in the catheter that cooperates with the needle retainer.
Claim 23
Dependent Claim
13 words
The medical device of claim 11 wherein the releasable member is a catheter.
Claim 24
Dependent Claim
16 words
The medical device of claim 11 comprising a fluid chamber in fluid communication with the needle.
Claim 25
Dependent Claim
16 words
The medical device of claim 11 wherein the needle retainer is fixedly connected to the housing.
Claim 26
Dependent Claim
16 words
The medical device of claim 11 wherein the biasing element is fixedly connected to the needle.
Claim 27
Dependent Claim
21 words
The medical device of claim 11 wherein the rearward portion of the needle retainer comprises a latch for engaging the needle.
Claim 28
Dependent Claim
90 words
A medical device, comprising: a housing; a catheter removably mounted on the housing; an insertion needle; a needle retainer releasably retaining the insertion needle projecting forwardly from the housing, wherein the needle retainer is constrained to pivotable motion prior to retraction, the needle retainer comprising: a forward portion engaging the catheter; and a rearward portion connected with the needle; a biasing element biasing the needle rearwardly; wherein the needle retainer releases the needle upon removal of the catheter from the housing such that the biasing element propels the needle rearwardly.
Claim 29
Dependent Claim
90 words
A medical device, comprising: a housing; a catheter removably mounted on the housing; an insertion needle; a needle retainer releasably retaining the insertion needle projecting forwardly from the housing, wherein the needle retainer is constrained to pivotable motion prior to retraction, the needle retainer comprising: a forward portion engaging the catheter; and a rearward portion connected with the needle; a biasing element biasing the needle rearwardly; wherein the needle retainer releases the needle upon removal of the catheter from the housing such that the biasing element propels the needle rearwardly.
Claim 30
Dependent Claim
69 words
The medical device of claim 26 wherein the catheter is operable between a mounted position in which the catheter is mounted on the housing, and a removed position in which the catheter is removed from the housing, wherein the device comprises an indicator associated with the catheter operable to provide an indication signal when the catheter is displaced into a position intermediate the mounted position and the removed position.
Claim 31
Dependent Claim
14 words
The medical device of claim 27 wherein the indication signal is audible or tactile.
Claim 32
Dependent Claim
12 words
The medical device of claim 27 wherein the indication signal is visual.
Claim 33
Dependent Claim
21 words
The medical device of claim 27 wherein the indicator comprises a recess in the catheter that cooperates with the needle retainer.
Claim 34
Dependent Claim
20 words
The medical device of claim 26 wherein the rearward portion of the needle retainer is spaced rearwardly from the catheter.
Claim 35
Dependent Claim
22 words
The medical device of claim 26 wherein at least part of the rearward portion of the needle retainer projects into the housing.
Claim 36
Dependent Claim
20 words
The medical device of claim 26 wherein the forward portion and the rearward portion of the needle retainer are integral.
Claim 37
Dependent Claim
16 words
The medical device of claim 26 comprising a fluid chamber in fluid communication with the needle.
Claim 38
Dependent Claim
22 words
The medical device of claim 26 wherein the housing is hollow and the housing has a rearward end that is substantially closed.
Claim 39
Dependent Claim
16 words
The medical device of claim 26 wherein the needle retainer is fixedly connected to the housing.
Claim 40
Dependent Claim
21 words
The medical device of claim 26 wherein the rearward portion of the needle retainer comprises a latch for engaging the needle.
Claim 41
Dependent Claim
26 words
The medical device of claim 26 wherein the catheter has an internal surface and an external surface and the forward portion engages the catheter external surface.
Claim 42
Dependent Claim
25 words
The medical device of claim 26 comprising a guard for preventing manual operation of at least part of the rearward portion of the needle retainer.
Claim 43
Dependent Claim
20 words
The medical device of claim 26 wherein the forward portion and the rearward portion of the needle retainer are integral.
Claim 44
Dependent Claim
98 words
A medical device, comprising: a catheter having an internal surface and an external surface; a housing onto which the catheter is removably mounted; a needle projecting forwardly from the housing; a biasing element biasing the needle rearwardly; a needle retainer having a first portion engaging the catheter external surface and a second portion connected with the needle, wherein the needle retainer is constrained to pivotable motion prior to retraction; wherein the needle retainer releases the needle in response to removal of the catheter from the housing so that the biasing element propels the needle rearwardly into the housing.
Claim 45
Dependent Claim
98 words
A medical device, comprising: a catheter having an internal surface and an external surface; a housing onto which the catheter is removably mounted; a needle projecting forwardly from the housing; a biasing element biasing the needle rearwardly; a needle retainer having a first portion engaging the catheter external surface and a second portion connected with the needle, wherein the needle retainer is constrained to pivotable motion prior to retraction; wherein the needle retainer releases the needle in response to removal of the catheter from the housing so that the biasing element propels the needle rearwardly into the housing.
Claim 46
Dependent Claim
69 words
The medical device of claim 41 wherein the catheter is operable between a mounted position in which the catheter is mounted on the housing, and a removed position in which the catheter is removed from the housing, wherein the device comprises an indicator associated with the catheter operable to provide an indication signal when the catheter is displaced into a position intermediate the mounted position and the removed position.
Claim 47
Dependent Claim
14 words
The medical device of claim 42 wherein the indication signal is audible or tactile.
Claim 48
Dependent Claim
12 words
The medical device of claim 42 wherein the indication signal is visual.
Claim 49
Dependent Claim
24 words
The medical device of claim 42 wherein the indicator comprises a recess in the catheter that cooperates with the forward portion of the lever.
Claim 50
Dependent Claim
20 words
The medical device of claim 41 wherein the first portion and the second portion of the needle retainer are integral.
Claim 51
Dependent Claim
20 words
The medical device of claim 41 wherein the second portion of the needle retainer is spaced rearwardly from the catheter.
Claim 52
Dependent Claim
22 words
The medical device of claim 41 wherein at least part of the second portion of the needle retainer projects into the housing.
Claim 53
Dependent Claim
16 words
The medical device of claim 41 comprising a fluid chamber in fluid communication with the needle.
Claim 54
Dependent Claim
16 words
The medical device of claim 41 wherein the needle retainer is fixedly connected to the housing.
Claim 55
Dependent Claim
16 words
The medical device of claim 41 wherein the biasing element is fixedly connected to the needle.
Claim 56
Dependent Claim
25 words
The medical device of claim 41 comprising a guard for preventing manual operation of at least part of the second portion of the needle retainer.
References Cited (Backward Citations)
US4747831A
Cited
US5092853A
Cited
US5338305A
Cited
US5496274A
Cited
US5346480A
Cited
US5433712A
Cited
US5697907A
Cited
US5514100A
Cited
US5562629A
Cited
US5562634A
Cited
US5501675A
Cited
US5683368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-20 | 2003-12-20 | 2004-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-20 | 2007-12-20 | 2008-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-20 | 2011-12-20 | 2012-06-20 | $7700.00 | Window Closed / Lapsed |