US3875939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single stroke dispensing method
Assignee: CRX MEDICAL Inc NORTH A CORP OF NC
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Filing: 1974-01-31
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Granted: 1975-04-08
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Expires: 1994-01-31
Abstract
Abstract A fluid dispensing instrument and method for placing a drug material in the uterine cavity and moving the drug material from the uterine cavity to the canals of the Fallopian tubes of a female primate. The instrument has an elongated probe carrying an expandable sleeve. A housing connected to the probe has piston and cylinder structure connected with a first drive linkage to a movable actuator. A container storing the drug material is located in the housing. A second drive linkage connects the actuator with a plunger operable to move the container onto a needle and force the drug material through the probe and into the uterine cavity. The actuator is continuously moved into the housing to initially partially expand the sleeve member to displace part of the uterine cavity. Further movement of the actuator dispenses the drug material from the probe into the uterine cavity. Continued movement of the actuator fully expands the sleeve member to displace the entire uterine cavity and pump the drug material into the canals of the Fallopian tubes. After the sleeve member is contracted by releasing the fluid pressure applied thereto, the probe is removed from the uterine cavity.
Inventors
- 👤 Lee R Bolduc
- 👤 Eugene A Dickhudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:03
CPC Classifications
A; A61; A61M; A61M31/00; A61F; A61F6/00; A61F6/20; A61F6/22; A61F6/225; A61M2210/00; A61M2210/14; A61M2210/1425
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
160 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure, discharging material into the uterine cavity above the expanded sleeve means in opposite lateral directions which separates the material into two portions, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to an increased fluid pressure thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, said continuing expansion of the sleeve means moves said two portions of the material into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 2
Independent Claim
160 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure, discharging material into the uterine cavity above the expanded sleeve means in opposite lateral directions which separates the material into two portions, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to an increased fluid pressure thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, said continuing expansion of the sleeve means moves said two portions of the material into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 3
Dependent Claim
26 words
The method of claim 1 including: preventing an increase in the fluid pressure applied to the sleeve means when the sleeve means has been fully expanded.
Claim 4
Dependent Claim
38 words
The method of claim 1 wherein: the sleeve means is continuously expanded from the contracted condition to the fully expanded position, and the drug material is introduced into the uterine cavity after initial expansion of the sleeve means.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein: the material is a first material and a second material, said first material and second material being mixed together during the movement of the materials before the materials are discharged into the uterine cavity.
Claim 6
Dependent Claim
36 words
The method of claim 1 wherein: the sleeve means is partially expanded, the material is discharged into the uterine cavity, and the sleeve means is fully expanded by a single continuous movement of a single actuator.
Claim 7
Independent Claim
156 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure, discharging a first material and a second material into the uterine cavity above the expanded sleeve means, said first material and second material being mixed together during movement of the materials before the materials are discharged into the uterine cavity, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to increased fluid pressure thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 8
Independent Claim
156 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure, discharging a first material and a second material into the uterine cavity above the expanded sleeve means, said first material and second material being mixed together during movement of the materials before the materials are discharged into the uterine cavity, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to increased fluid pressure thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 9
Dependent Claim
40 words
The method of claim 6 wherein: the sleeve means is partially expanded, the first material and second material are discharged into the uterine cavity, and the sleeve means is fully expanded by a single continuous movement of a single actuator.
Claim 10
Dependent Claim
26 words
The method of claim 6 including: preventing an increase in the fluid pressure applied to the sleeve means when the sleeve means has been fully expanded.
Claim 11
Dependent Claim
40 words
The method of claim 6 wherein: the sleeve means is continuously expanded from the contracted condition to fully expanded position, and the mixed first and second materials are introduced into the uterine cavity after initial expansion of the sleeve means.
Claim 12
Independent Claim
148 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in the contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure by movement of a single actuator, discharging material into the uterine cavity above the expanded sleeve means with continued movement of the single actuator, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to an increased fluid pressure by continuous movement of the single actuator thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 13
Independent Claim
148 words
A method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in the contracted condition, expanding the sleeve means to displace part of the uterine cavity by subjecting the sleeve means to a fluid pressure by movement of a single actuator, discharging material into the uterine cavity above the expanded sleeve means with continued movement of the single actuator, continuing the expansion of the sleeve means to fully displace the uterine cavity by subjecting the sleeve means to an increased fluid pressure by continuous movement of the single actuator thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means by reducing the fluid pressure applied thereto, and removing the contracted sleeve means from the uterine cavity.
Claim 14
Dependent Claim
26 words
The method of claim 10 including: preventing an increase in the fluid pressure applied to the sleeve means when the sleeve means has been fully expanded.
Claim 15
Dependent Claim
46 words
The method of claim 10 wherein: the sleeve means is continuously expanded from the contracted condition to the fully expanded position and the material is introduced into the uterine cavity after the initial expansion of the sleeve means by the continuous movement of the single actuator.
Claim 16
Independent Claim
128 words
The method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity in response to movement of a single actuator, discharging material into the uterine cavity above the expanded sleeve means in response to further movement of the single actuator, continuing the expansion of the sleeve means to fully displace the uterine cavity in response to continuing movement of the single actuator thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means, and removing the contracted sleeve means from the uterine cavity.
Claim 17
Independent Claim
128 words
The method of placing material into both canals of the Fallopian tubes of a female open to the uterine cavity with an expandable sleeve means comprising: introducing the sleeve means into the uterine cavity in a contracted condition, expanding the sleeve means to displace part of the uterine cavity in response to movement of a single actuator, discharging material into the uterine cavity above the expanded sleeve means in response to further movement of the single actuator, continuing the expansion of the sleeve means to fully displace the uterine cavity in response to continuing movement of the single actuator thereby forcing the material in the uterine cavity into the canals of the Fallopian tubes, contracting the sleeve means, and removing the contracted sleeve means from the uterine cavity.
Claim 18
Dependent Claim
46 words
The method of claim 13 wherein: the material is discharged into the uterine cavity in opposite lateral directions which separates the material into two portions, said continuing expansion of the sleeve means moves said two portions of the material into the canals of the Fallopian tubes.
Claim 19
Dependent Claim
24 words
The method of claim 13 including: preventing an increase of the size of the sleeve means when the sleeve means has been fully expanded.
Claim 20
Dependent Claim
40 words
The method of claim 13 wherein: the material is a first material and a second material, said first material and second material being mixed together during the movement of the materials before the materials are discharged into the uterine cavity.
Claim 21
Independent Claim
124 words
The method of placing material into canals of tubes connected to a structure having a cavity, said canals being open to the cavity with an expandable sleeve means comprising: introducing the sleeve means into the cavity in a contracted condition, expanding the sleeve means to displace part of the cavity in response to movement of a single actuator, discharging material into the cavity above the expanded sleeve means in response to further movement of the single actuator, continuing the expansion of the sleeve means to fully displace the cavity in response to continuing movement of the single actuator thereby forcing the material in the cavity into the canals of the tubes, contracting the sleeve means, and removing the contracted sleeve means from the cavity.
Claim 22
Independent Claim
124 words
The method of placing material into canals of tubes connected to a structure having a cavity, said canals being open to the cavity with an expandable sleeve means comprising: introducing the sleeve means into the cavity in a contracted condition, expanding the sleeve means to displace part of the cavity in response to movement of a single actuator, discharging material into the cavity above the expanded sleeve means in response to further movement of the single actuator, continuing the expansion of the sleeve means to fully displace the cavity in response to continuing movement of the single actuator thereby forcing the material in the cavity into the canals of the tubes, contracting the sleeve means, and removing the contracted sleeve means from the cavity.
Claim 23
Dependent Claim
44 words
The method of claim 17 wherein: the material is discharged into the cavity in opposite lateral directions which separates the material into two portions, said continuing expansion of the sleeve means moves said two portions of the material into the canals of the tubes.
Claim 24
Dependent Claim
24 words
The method of claim 17 including: preventing an increase of the size of the sleeve means when the sleeve means has been fully expanded.
Claim 25
Dependent Claim
39 words
The method of claim 17 wherein: the material is a first material and a second material, said first material and second material being mixed together during the movement of the materials before the materials are discharged into the cavity.
References Cited (Backward Citations)
US3817248A
Cited
US3805767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |