Patent US4976718A successfully refreshed from Google Patents.
US4976718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parasite remover
Assignee: Individual
•
Filing: 1989-06-21
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Granted: 1990-12-11
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Expires: 2009-06-21
Abstract
Abstract A forceps for removing a parasite such as a tick from a human or animal host where the parasite has attached itself to the host at its head and the parasite contains fluids which can be expelled into the host upon the application of an external squeezing force, particularly a squeezing force applied to the body of the parasite. The forceps includes first and second arms each having a distal end and a proximal end and secured so that they are movable in opposition to one another between an open position and a closed position. A gripping section for engaging the parasite is mounted on the distal end of the forceps. The gripping section includes first and second sets of interdigitating teeth mounted on each of the opposed arms that are sized to closely surround the body of the parasite without crushing or squeezing any part of the parasite's body when the arms are in the closed position. The gripping section also has a portion mounted at the extreme distal end of the opposed arms with an oval opening formed in the extreme end portion when the opposed arms are in their closed position. The oval opening acts to closely grip and surround the head or neck of the parasite without crushing it. The parasite can be completely and quickly removed from the host without causing the parasite to expel disease containing fluids back into the host.
Inventors
- 👤 Christopher H. Daniell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/30; A61B17/50; A61B2017/505; Y; Y10; Y10S; Y10S294/00; Y10S294/902
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
282 words
Forceps for removing a parasite such as a tick from a host animal, said parasite having a body and a head smaller in cross-sectional area than the body, where the parasite has attached itself to the host at its head and the parasite contains fluids which can be expelled into the host animal upon the application of an external squeezing force, particularly a squeezing force applied to its body, comprising: first and second opposed arms each having a distal end and a proximal end and each arm extending generally along a first direction; means for securing said first and second arms so that they are movable in opposition to one another between an open position and a closed position in which said distal ends of said opposed arms are in contact with each other; means mounted on said distal ends of said opposed arms for gripping the parasite, said means for gripping being formed to engage said parasite without applying a squeezing force to any part of the parasite and with a surface positioning to abut the body of the parasite when said arms are in said closed position, and spaced from one another a sufficient distance to clear the body of the parasite when said arms are in said open position; whereby when said forceps are closed on a parasite that has attached itself to the host animal without the use of an irritating stimulus, a movement of the forceps in a direction away from the host animal causes said abutting surface to obtain purchase on the body of the parasite and removes the parasite without squeezing the parasite so as to expel fluids from the parasite into the host animal.
Claim 2
Dependent Claim
282 words
Forceps for removing a parasite such as a tick from a host animal, said parasite having a body and a head smaller in cross-sectional area than the body, where the parasite has attached itself to the host at its head and the parasite contains fluids which can be expelled into the host animal upon the application of an external squeezing force, particularly a squeezing force applied to its body, comprising: first and second opposed arms each having a distal end and a proximal end and each arm extending generally along a first direction; means for securing said first and second arms so that they are movable in opposition to one another between an open position and a closed position in which said distal ends of said opposed arms are in contact with each other; means mounted on said distal ends of said opposed arms for gripping the parasite, said means for gripping being formed to engage said parasite without applying a squeezing force to any part of the parasite and with a surface positioning to abut the body of the parasite when said arms are in said closed position, and spaced from one another a sufficient distance to clear the body of the parasite when said arms are in said open position; whereby when said forceps are closed on a parasite that has attached itself to the host animal without the use of an irritating stimulus, a movement of the forceps in a direction away from the host animal causes said abutting surface to obtain purchase on the body of the parasite and removes the parasite without squeezing the parasite so as to expel fluids from the parasite into the host animal.
Claim 3
Dependent Claim
89 words
The forceps as claimed in claim 1 in which said means for gripping further comprises a concave structure that surrounds the body of said parasite without crushing any part of the parasite when said arms are in said closed position and an opening formed in said extreme distal end of said means for gripping and located at the extreme distal end of each of said arms, which is configured and sized to surround closely the head or neck of the parasite when said arms are in said closed position.
Claim 4
Dependent Claim
50 words
The forceps as claimed in claim 2 in which said means for gripping further comprises an end portion protecting substantially transversely to said first direction from each of said opposed arms and extending towards the other one of said opposed arms and said opening is formed in said end portion.
Claim 5
Dependent Claim
59 words
The forceps as claimed in claim 3 in which said concave structure comprises first and second teeth means, each of said first and second teeth means being curved to define a concavity and mounted to said opposed arms and extending generally transversely to said first direction; said teeth means arrayed in a mutually spaced relation along said first direction
Claim 6
Dependent Claim
33 words
The forceps as claimed in claim 4 in which said first and second teeth means comprise first and second sets of teeth configured and sized to substantially enclose the body of said parasite.
Claim 7
Dependent Claim
46 words
The forceps as claimed in claim 5 in which said first teeth means associated with said first arm are offset with respect to said second teeth means associated with said second arm along said first direction to avoid clamping or crushing any part of the parasite.
Claim 8
Dependent Claim
24 words
The forceps as claimed in claim 6 in which said first and second teeth means interdigitate when said arms are in said closed position.
Claim 9
Dependent Claim
38 words
The forceps as claimed in claim 7 in which said first and second interdigitating teeth means each increase monotonically in length from said distal end to said proximal end of each of said arms along said first direction.
Claim 10
Dependent Claim
47 words
The forceps as claimed in claim 8 in which each of said end portions at the distal end of each of said opposed arms has a flat end surface at the extreme distal end of said end portion, said surface being substantially perpendicular to said first direction.
Claim 11
Dependent Claim
66 words
The forceps as claimed in claim 9 in which one of said end portions has a surface acutely angled with respect to said end surface, and said acutely angled surface extends generally from said distal end towards said proximal end, and the other of said opposed end portions has a surface that mates with said acutely angled surface when said arms are in said closed position.
Claim 12
Dependent Claim
18 words
The forceps as claimed in claim 10 in which said opposed arms are approximately fourteen centimeters in length.
Claim 13
Dependent Claim
36 words
The forceps as claimed in claim 11 in which said first and second interdigitating teeth means each comprise five sets of teeth that vary in length from approximately four millimeters to approximately ten to twelve millimeters.
Claim 14
Dependent Claim
47 words
The forceps as claimed in claim 12 in which said opening is substantially oval, said oval having a major axis extending along the longest straight line connecting two points on the periphery of said oval, and a minor axis orthogonal to and smaller than said major axis.
Claim 15
Dependent Claim
47 words
The forceps as claimed in claim 13 in which said oval opening is formed so that the major axis of said oval is substantially perpendicular to said first direction and the major axis of said oval is also substantially parallel to said first and second teeth means.
Claim 16
Dependent Claim
21 words
The forceps as claimed in claim 14 in which said major axis is in the range of 0.8 to 1.2 millimeters.
Claim 17
Dependent Claim
18 words
The forceps as claimed in claim 10 in which said opposed arms are approximately six centimeters in length.
Claim 18
Dependent Claim
37 words
The forceps as claimed in claim 16 in which said first and second interdigitating teeth means comprise two sets of teeth that vary in length from approximately one to two millimeters to approximately two to three millimeters.
Claim 19
Dependent Claim
47 words
The forceps as claimed in claim 17 in which said opening is substantially oval, said oval having a major axis extending along the longest straight line connecting two points on the periphery of said oval, and a minor axis orthogonal to and smaller than said major axis.
Claim 20
Dependent Claim
47 words
The forceps as claimed in claim 18 in which said oval opening is formed so that the major axis of said oval is substantially perpendicular to said first direction and the major axis of said oval is also substantially parallel to said first and second teeth means.
Claim 21
Dependent Claim
21 words
The forceps as claimed in claim 19 in which said major axis is in the range of 0.3 to 0.5 millimeters.
Claim 22
Dependent Claim
20 words
The forceps as claimed in claim 1 in which said forceps are made out of stainless steel or metal alloy.
Claim 23
Dependent Claim
16 words
The forceps as claimed in claim 1 in which said forceps are made out of plastic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |