Tissue gripping device

Patent metadata

Field	Value
Publication number	US-2016157703-A1
Application number	US-201414900049-A
Country	US
Kind code	A1
Filing date	Jun 18, 2014
Priority date	Jun 18, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

The present disclosure provides a tissue gripping device. The device comprises a head with contact face attachable to the distal end of at least one hollow member. The contact face has one or more openings in flow communication with a suction device though the at least one hollow member wherein a negative pressure gradient can be applied across the one or more openings to allow the head to grasp tissue. The device may comprise flexible members to facilitate the navigation of internal organs. Additionally, the head can have one or more tool holes. The tool hole can house an ejecting surgical clip for medical procedure. The device may further be attachable to a sensor or another medical device. The grasping allows fixation and manipulation of tissue, traversal of the small intestine, and counter traction for tool insertion.

First claim

Therefore what is claimed is:

1 . A tissue gripping device for use in association with a clip having a distal end and a suction device, comprising:
a hollow member having a distal end and a proximal end; a head, having a contact face and an inlet, the inlet being attachable to the distal end of the hollow member; a tool channel having a distal end and a proximal end; the contact face having at least one opening, the at least one opening being in flow communication with a suction device through the hollow member; a generally elongate tool housing formed in the head and configured to receive the clip wherein the tool housing is attachable to and in flow communication with the distal end of the tool channel; a tool trench formed in the head configured to receive therein the distal end of the clip; and a control device attachable to the proximal end of the hollow member and operably attachable to the proximal end of the tool channel, whereby the clip is ejected responsive to actuation by the control device from the tool channel and into the tool trench.

2 . The tissue gripping device as claimed in claim 1 , wherein the clip is loaded into the tool housing through the proximal end of the tool channel.

3 . The tissue gripping device as claimed in any one of claim 1 or 2 , wherein the clip has a loop shape in stable equilibrium position.

4 . The tissue gripping device as claimed in any one of claims 1 to 3 , wherein the clip is composed of elastic material, super-elastic material or shape memory material.

5 . The tissue gripping device as claimed in claim 4 , wherein the clip is composed of self-closing, super-elastic nitinol.

6 . The tissue gripping device as claimed in any one of claims 1 to 5 , wherein the tool housing has an embedded ejection mechanism for ejecting the clip.

7 . The tissue gripping device as claimed in claim 6 , wherein the embedded ejection mechanism is mechanically, electro-dynamically, pneumatically or hydraulically actuated from the control device.

8 . The tissue gripping device as claimed in claim 7 , wherein the head further comprises an inflatable bladder in flow communication with a bladder pump.

9 . The tissue gripping device as claimed in claim 8 , wherein the inflatable bladder can be inflated or deflated with the bladder pump such that size dimensions of the head can be increased or decreased, responsive to the bladder pump.

10 . The tissue gripping device as claimed in claim 8 or 9 , where in the inflatable bladder can be inflated or deflated with the bladder pump such that size dimensions of the at least one opening can be increased or decrease, respectively.

11 . The tissue gripping device as claimed in any one of claims 8 to 10 , wherein the inflatable bladder is inflated or deflated hydraulically or pneumatically.

12 . The tissue gripping device as claimed in any one of claims 1 to 11 , wherein the hollow member is flexible.

13 . The tissue gripping device as claimed in any one of claims 1 to 12 , wherein the tissue gripping device further comprises at least one flexible member having a distal end and a proximal end wherein the distal end it attachable to the head such that relative translation between the hollow member and at least one flexible member rotates the head.

14 . The tissue gripping device as claimed in claim 13 , wherein an attachment is slidably attached to the hollow member, the at least one flexible member and the tool channel such that the head can rotate or translate with respect to the attachment.

15 . The tissue gripping device as claimed in claim 14 , further including a second tissue gripping device with a second device member wherein the second device member is slidably attached to the attachment.

16 . The tissue gripping device as claimed in any one of claims 1 to 15 , wherein the hollow member is reinforced with a spring core or a superelastic tube.

17 . The tissue gripping device as claimed in any one of claims 1 to 16 , wherein at least one chord, rope, string or wire is attachable to the head such that tension can be applied to rotate the head with respect to the hollow member.

18 . The tissue gripping device as claimed in any one of claims 1 to 17 , wherein the contact face has a convex shape.

19 . The tissue gripping device as claimed in claim 18 , wherein the convex shape has a radius of convexity similar to a radius of concavity of a natural orifice or a natural lumen.

20 . The tissue gripping device as claimed in any one of claims 1 to 19 , wherein the hollow member is a conduit in flow communication with the at least one opening.

21 . The tissue gripping device as claimed in claim 20 , wherein the conduit is in flow communication with the suction device.

22 . The tissue gripping device as claimed in claim 21 , wherein the suction device is one of a pump, a vacuum and a pump and vacuum.

23 . The tissue gripping device as claimed in any one of claims 1 to 22 , wherein a surface of the contact face is treated with microgrooves.

24 . The tissue gripping device as claimed in claim 23 , wherein the microgrooves are stiff micro-pillars extending outwardly from the contact face.

25 . The tissue gripping device as claimed in claim 24 , wherein the microgrooves are soft micro-pillars extending outwardly from the contact face such that the soft micro-pillars deform under sheering and normal force.

26 . The tissue gripping device as claimed in any one of claims 23 to 25 , wherein the surface of the contact face is treated with a hydrophilic, hydrophobic, knurled or abraded coating.

27 . The tissue gripping device as claimed in any one of claims 1 to 26 , wherein the head is rigid.

28 . The tissue gripping device as claimed in any one of claims 1 to 27 , wherein one of at least one lens, window and fiber optic cable is built into the head.

29 . The tissue gripping device as claimed in any one of claims 1 to 28 , wherein the head is constructed from transparent or translucent material.

30 . The tissue gripping device as claimed in any one of claims 1 to 29 , wherein the contact face comprises a plurality of openings of different sizes such that smaller openings are placed proximate to the edge of the contact face.

31 . The tissue gripping device as claimed in any one of claims 1 to 30 , wherein the tissue gripping device is attachable to an endoscope, a drug administering device, an electrode or a medical retractor.

32 . The tissue gripping device as claimed in any one of claims 1 to 31 , wherein the head is attachable to a sensor.

33 . The tissue gripping device as claimed in claim 32 , wherein the sensor is capable of measuring at least one of the following: force, pressure, capacitance, temperature and pH.

34 . The tissue gripping device as claimed in claim 33 , wherein the sensor is an ultrasonic transducer, a magnetic resonance imaging coil, an optical sensor or lens, an optical coherence tomography sensor or a mechanical excitation and force transducer for elastography imaging.

35 . The tissue gripping device as claimed in any one of claims 1 to 34 , where the at least one opening is used to grasp and deliver a patch or a film into an orifice or a lumen.

Assignees

• Hospital For Sick Children

Inventors

• Brooks Robert
• Looi Thomas
• Drake James

Classifications

• A61B1/00087

  Tools (A61B17/00234 takes precedence) · CPC title

• A61B1/00094 Primary

  Suction openings · CPC title

• A61B17/1285

  for minimally invasive surgery · CPC title

• A61B1/0014

  Fastening element for attaching accessories to the outside of an endoscope, e.g. clips, clamps or bands · CPC title

• A61B1/00137

  End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs · CPC title