Snare injection device

Patent metadata

Field	Value
Publication number	US-2018228503-A1
Application number	US-201815893154-A
Country	US
Kind code	A1
Filing date	Feb 9, 2018
Priority date	Feb 10, 2017
Publication date	Aug 16, 2018
Grant date	—

Abstract

A medical device for performing an endoscopic procedure through an endoscope is provided. The device includes an elongated catheter having a first lumen and a second lumen; a needle system for injecting a target tissue within a body; and a base disposed at a proximal end of the catheter. The actuator tube is inserted through the base and the first lumen. A needle housing member is positioned between the needle and the first lumen when the needle is in a stored position. The needle housing member has a predetermined length so that the needle is disposed within the needle housing member when the needle is at the stored position. The needle housing member has a continuous inner surface and prevents the needle from penetrating the first lumen. The needle includes a tip, deflected towards a center axis of the needle. The first and second lumens have different deflected forces.

First claim

What is claimed is:

1 . A medical device for performing an endoscopic procedure through an endoscope, the device comprising:
a catheter having a first lumen and a second lumen; a needle system for injecting a target tissue within a body, wherein the needle system comprises a needle, and an actuator tube, wherein the needle is connected to a distal end of the actuator tube; and a base disposed at a proximal end of the catheter,
wherein the actuator tube is inserted through the base and the first lumen; the needle operably protrudes a predetermined distance out of a distal end of the catheter,
wherein the first lumen and second lumen have different deflected forces.

2 . The medical device of claim 1 , wherein the deflected force of the first lumen is larger than the deflected force of the second lumen.

3 . The medical device of claim 2 , wherein the deflected force of the first lumen is about 1-3 times as strong as the second lumen.

4 . The medical device of claim 3 , wherein the deflected force of the first lumen is about 1.7 times as strong as the second lumen.

5 . A medical device for performing an endoscopic procedure through an endoscope, the device comprising:
a catheter having a first lumen and a second lumen; a needle system for injecting a target tissue within a body, wherein the needle system comprises a needle, and an actuator tube, wherein the needle is connected to a distal end of the actuator tube; and a base disposed at a proximal end of the catheter,
wherein the actuator tube is inserted through the base and the first lumen; the needle operably protrudes a predetermined distance out of a distal end of the catheter,
wherein the needle system further comprises a needle housing member, positioned between the needle and the first lumen when the needle is in a stored position, wherein the needle housing member has a predetermined length so that the needle is disposed within the needle housing member when the needle is at the stored position, the needle housing member has a continuous inner surface and prevents the needle from penetrating the first lumen.

6 . The medical device of claim 5 , wherein a distal end of the needle housing member is tapered and does not extend beyond a distal end of the first lumen.

7 . The medical device of claim 5 , wherein a distal end of the needle housing member limits the length of the needle protruding out of the distal end of the catheter.

8 . The medical device of claim 6 , wherein the distal end of the needle housing member and the distal end of the first lumen are even.

9 . The medical device of claim 5 , wherein the needle housing member is disposed in place by being heat shrunk, press fit, or bonded.

10 . The medical device of claim 5 , wherein the needle housing member comprises barbs or ribbed sections against the first lumen to hold the housing member in place.

11 . The medical device of claim 5 , wherein the housing member is non-conductive.

12 . The medical device of claim 5 , wherein the needle system further comprises a stopper, sized and configured to prevent the needle from deploying beyond a desired distance or falling out of the first lumen.

13 . The medical device of claim 5 , wherein the stopper is disposed on the actuator tube.

14 . The medical device of claim 5 , wherein the stopper comprises a hypotube.

15 . The medical device of claim 5 , wherein the stopper and the needle are made of a unitary construction.

16 . The medical device of claim 5 , wherein the stopper and the actuator tube are made of a unitary construction.

17 . The medical device of claim 5 , wherein the actuator tube is selectively manipulated by movement of a hollow knob, wherein the knob is fixed to a proximal end of the actuator tube.

18 . The medical device of claim 5 , wherein the catheter further comprises a covering tube, and the first and second lumens are disposed through the covering tube.

19 . The medical device of claim 5 , wherein the catheter is a single piece of extruded plastic.

20 . The medical device of claim 5 , wherein a proximal portion of the actuator tube is made of a steel, and a distal portion of the actuator tube is made of polyetheretherketone (PEEK).

21 . The medical device of claim 5 , wherein at least a portion of the actuator tube has an outer diameter of at least about 0.035 inch.

22 . The medical device of claim 5 , wherein the first lumen and second lumen have different deflected forces.

23 . The medical device of claim 5 , wherein the needle comprises a tip, oriented towards a center axis of the needle.

24 . The medical device of claim 5 further comprising a snare system for resecting the targeted tissue, wherein the snare system comprises a snare, and an actuating cable, wherein the cable is inserted through the second lumen.

25 . The medical device of claim 24 , wherein the snare is a cold snare for cold resection.

26 . The medical device of claim 24 , wherein the snare is a hot snare for hot resection.

27 . The medical device of claim 5 further comprising a retrieval system for retrieving a foreign object within a body, wherein the retrieval system comprises a net, and an actuating cable, wherein the cable is inserted through the second lumen.

28 . A medical device for performing an endoscopic procedure through an endoscope, the device comprising:
a catheter having a first lumen and a second lumen; a needle system for injecting a target tissue within a body, wherein the needle system comprises a needle, and an actuator tube, wherein the needle is connected to a distal end of the actuator tube; and a base disposed at a proximal end of the catheter,
wherein the actuator tube is inserted through the base and the first lumen; the needle operably protrudes a predetermined distance out of a distal end of the catheter,
wherein the needle comprises a tip, oriented towards a center axis of the needle.

29 . The medical device of claim 28 , wherein a deflection of the needle is between 0.001 inch and 0.1 inch.

30 . The medical device of claim 29 , wherein a deflection of the needle is between 0.0016 inch and 0.0114 inch.

31 . The medical device of claim 28 , wherein the needle is a two-point deflected needle.

Assignees

• United States Endoscopy Group Inc

Inventors

• Russo Jessica Lynn
• Still Rapheal
• Uspenski Alex
• Kaye Christopher J
• John Keith R
• Pastor Stephen T

Classifications

• A61M25/0084

  being one or more injection needles · CPC title

• A61B2017/22082

  after introduction of a substance · CPC title

• A61B18/04

  by heating (by applying electromagnetic radiation A61B18/18) · CPC title

• A61B18/02

  by cooling, e.g. cryogenic techniques · CPC title

• A61B2018/00083

  low, i.e. electrically insulating · CPC title