Extractable filler for inserting medicine into animal tissue

• US 7,175,627 B2
• Filed: 09/02/2003
• Issued: 02/13/2007
• Est. Priority Date: 05/21/2003
• Status: Expired due to Fees

• Current Assignee: Crosstrees Medical, Inc.
• Original Assignee: Crosstrees Medical, Inc.
• Inventors: Lin, Kwan Ku, Yuan, Philip S.
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): Witczak; Catherine N.
• Application Number:
  US10/651,988
• Publication Number:
  US 20040236306A1
• Time in Patent Office: 1,260 Days
• Field of Search: 604 57- 64, 604/93.01, 604/500, 604/502, 606/92, 606/93, 606/94, 606/86, 623/17.12
• US Class Current: 606/86.00R
• CPC Class Codes: A61M 37/00 Other apparatus for introducing media into the body for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30; Percutany, i.e. introducing medicines into the body by diffusion through the skin salt baths A61H33/04

Abstract

An extractable device is used to insert a medicinal filling into an animal tissue. The device comprises a filling member and a pasty medicine. The filling member is made of a flexible and permeable wall and is provided with a holding portion and an injection port via which the pasty medicine is injected into the holding portion after the filling member is inserted into the animal tissue. The holding portion is provided with an opening which is releasably lashed by one end of one or more threads so as to make the opening leakproof. Upon completion of solidification of the pasty medicine in the holding portion of the filling member, other end of the thread is pulled to unlash the opening of the holding portion, thereby enabling the filling member to be extracted from the animal tissue so as to leave only the medicine in the animal tissue.

Claims

1. An extractable device for inserting a medicinal filling into an animal tissue, said device comprising:

a filling member comprising a flexible and permeable wall and provided with a holding portion, an injection port at one end of the holding portion, and an opening at another, releasably closable, opening end of the holding portion;

one or more thread, each having one end for releasably closing said opening end of said holding portion in such a manner that said opening end is leakproof; and

a pasty medicine to be injected into said holding portion via said injection port of said filling member in the wake of a process for inserting said filling member into the animal tissue whereby said pasty medicine solidifies in said holding portion of said filling member;

said opening end of said holding portion being reopened at the time when other end of said threads is pulled by an external force, thereby enabling said filling member to be extracted from the animal tissue so as to leave only said medicine in the animal tissue.

2. The device as defined in claim 1, wherein said flexible and permeable wall is of a one-layered or multi-layered construction.

3. The device as defined in claim 1, wherein said holding portion of said filling member is integrally formed by said flexible and permeable wall into a body in the form of sac, bag, or ball.

4. The device as defined in claim 1, wherein said pasty medicine is a mixture of a liquid and a medicinal powdered substance or medicinal granular substance.

5. The device as defined in claim 1 further comprising an injection tool for injecting said pasty medicine into said holding portion via said injection port.

6. The device as defined in claim 5, wherein said injection tool comprises a guide tube and a syringe, wherein one end of said guide tube is connected to said injection port of said filling member and another end of said guide tube is connected to said syringe in which said pasty medicine is held, so that said pasty medicine is able to be injected into said holding portion of said filling member by said syringe via said injection port and said guide tube.

7. The device as defined in claim 1, wherein said flexible and permeable wall is a double-layer tubular wall having one end of an inner layer thereof being provided with said injection port of said holding portion, and having another end thereof being a folded double-layer end with said opening end of said holding portion, wherein said medicine is released from said filling member by pulling a free end of an outer layer of the double-layer tubular wall to retreat the folded double-layer end, after said opening end of said holding portion being reopened.

8. The device as defined in claim 7, wherein said one or more thread is between said inner layer and said outer layer of said double-layer tubular wall.

9. The device as defined in claim 6, wherein said flexible and permeable wall is a double-layer tubular wall having one end of an inner layer thereof being provided with said injection port of said holding portion, and having another, releasably closable, opening end thereof being a folded double-layer end, wherein said medicine is released from said filling member by pulling a free end of an outer layer of the double-layer tubular wall to retreat the folded double-layer, after said opening end of said holding portion being reopened.

10. The device as defined in claim 9, wherein said one or more thread is between said inner layer and said outer layer of said double-layer tubular wall.

11. An extractable device for inserting a medicinal filling into an animal tissue, said device comprising:

a filling member comprising a flexible and permeable wall which is formed of a plurality of threads by weaving and having a releasably closable opening, said filling member provided with a holding portion and an injection port at one end of the holding portion, said threads having a pull end extending out of said filling member; and

a pasty medicine to be injected into said holding portion via said injection port of said filling member in the wake of a process for inserting said filling member into the animal tissue whereby said pasty medicine solidifies in said holding portion of said filling member;

said flexible and permeable wall of said filling member being reopened at the time when the pull end of said threads is pulled by an external force, thereby enabling said filling member to be extracted from the animal tissue so as to leave only said medicine in the animal tissue.

12. The device as defined in claim 11, wherein said flexible and permeable wall is of a one-layered or multi-layered construction.

13. The device as defined in claim 11, wherein said holding portion of said filling member is integrally formed by said flexible and permeable wall into a body in the form of sac, bag, or ball.

14. The device as defined in claim 11, wherein said pasty medicine is a mixture of a liquid and a medicinal powdered substance or medicinal granular substance.

15. The device as defined in claim 11 further comprising an injection tool for injecting said pasty medicine into said holding portion via said injection port.

16. The device as defined in claim 15, wherein said injection tool comprises a guide tube and a syringe, wherein one end of said guide tube is, connected to said injection port of said filling member and another end of said guide tube is connected to said syringe in which said pasty medicine is held, so that said pasty medicine is able to be injected into said holding portion of said filling member by said syringe via said injection port and said guide tube.

17. A method for implanting a solidified medicine into an animal tissue comprising:

inserting a filling member in a hole of an animal tissue, said filling member comprising a flexible and permeable wall and provided with a holding portion, an injection port at one end of the holding portion, and an opening at another, releasably closable, opening end of the holding portion, wherein one or more thread is provided and each having one end releasably closing said opening end of said holding portion in such a manner that said opening end is leakproof;

injecting a pasty medicine into said holding portion via said injection port of said filling member, whereby said pasty medicine solidifies in said holding portion of said filling member; and

unfastening said opening end of said holding portion by pulling other end of said threads, thereby enabling said filling member to be extracted from the animal tissue so as to leave only said solidified medicine in the animal tissue.

18. The method as defined in claim 17, wherein said pasty medicine is a mixture of a liquid and a medicinal powdered substance or medicinal granular substance.

19. The method as defined in claim 17, further comprising fastening detachably an injection tool with said filling member, so that said pasty medicine is injected into said holding portion via said injection tool.

20. The method as defined in claim 19, wherein said injection tool comprises a guide tube and a syringe, wherein one end of said guide tube is connected to said injection port of said filling member and another end of said guide tube is connected to said syringe in which said pasty medicine is held, wherein said pasty medicine is injected into said holding portion of said filling member by said syringe via said injection port and said guide tube.