CN111789650A

CN111789650A - Medical anastomat

Info

Publication number: CN111789650A
Application number: CN201910281966.XA
Authority: CN
Inventors: 叶艳平; 单腾; 郭毅; 傅开芬; 张素梅
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd; Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-10-20

Abstract

The present invention provides a medical stapler having a first end and a second end along a first direction, the medical stapler comprising: the head part comprises a nail bin assembly and a nail anvil assembly; the actuating assembly is provided with an accommodating space which is communicated along a first direction; a handle assembly that is held to move in a first direction toward a second end; the slender rod penetrates through the accommodating space from the first end of the medical anastomat and extends to the second end; a rotation button located at the first end and connected to the elongated rod, the elongated rod rotating with the rotation button; and the firing sleeve is positioned on one side of the actuating assembly facing the second end and is sleeved with the slender rod, the firing sleeve moves to the second end along with the actuating assembly in the first direction, and the firing sleeve rotates along with the slender rod and drives the head to rotate. According to the invention, the slender rod and the firing sleeve sleeved on the slender rod are rotated by rotating the button, so that when the medical anastomat is applied, the head at the far end side of the anastomat can be rotated to perform anastomosis on tissues at a specified position.

Description

Medical anastomat

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical anastomat.

Background

Digestive tract diseases are one of the high-incidence diseases of human beings, and in the treatment process, a medical anastomat is often used for performing anastomosis on physiological tissues such as the digestive tract and the like instead of manual operation of a doctor. The medical anastomat is a common surgical operation instrument, an axial internal stapling mode is mostly adopted, physiological tissues such as esophagus, stomach and intestinal tract are anastomosed end to end or end to side in an operation, two sections of tissues are contained in the medical anastomat in an inwards converging mode in an anastomosing process, a circular anastomotic stoma is formed on the tissues after the completion of the anastomosis, and a human body channel is rebuilt.

In the prior art, a medical stapler comprises a medical stapler body, a head part and an operating handle movably connected with the medical stapler body, the medical stapler comprises a firing mechanism matched with the operating handle, and the head part comprises a nail bin, a nail bin rack, a nail bin assembly and a nail anvil assembly. In the present invention, the distal side and the proximal side are relative to the operator, and the end closer to the operator is the proximal side, and the end farther from the operator, i.e., the end closer to the surgical site is the distal side. During operation, the nail bin assembly and the nail anvil assembly are closed, the operating handle is held to trigger, the triggering structure can push the anastomotic nails to move towards tissues, and the tissues are anastomosed through forming of the anastomotic nails in the nail bin assembly at the nail anvil assembly.

In the application of the existing medical anastomat, in order to anastomose tissues at a designated position, an operator needs to adjust the position of the head, so that the head can deflect a certain angle, and meanwhile, the head can rotate 360 degrees relative to the body, so that the head can reach a predetermined operation position conveniently.

Disclosure of Invention

In view of the problems in the prior art, it is an object of the present invention to provide a medical stapler, which can rotate an elongate rod and a firing sleeve sleeved on the elongate rod by rotating a button, so that when the medical stapler is applied, a head portion at a distal end side of the stapler can be rotated to perform anastomosis on tissues at a designated position.

An embodiment of the present invention provides a medical stapler having a first end and a second end along a first direction, the medical stapler including: the head part comprises a nail bin assembly and a nail anvil assembly; the actuating assembly is provided with an accommodating space which is communicated along a first direction; a handle assembly that, when gripped, moves the actuation assembly in the first direction toward the second end; the slender rod penetrates through the accommodating space from the first end of the medical anastomat to extend to the second end of the medical anastomat; a rotation button located at a first end of the medical stapler and connected to the elongated shaft, the elongated shaft rotating with the rotation button; and a firing sleeve positioned on one side of the actuating assembly facing the second end and sleeved outside the elongated rod, wherein the firing sleeve moves along with the actuating assembly relative to the elongated rod in the first direction to the second end, and the firing sleeve rotates along with the elongated rod and drives the head to rotate.

Optionally, the elongate rod is provided with a firing sleeve travel slot on a side of the actuation assembly toward the second end, the firing sleeve is provided with a through pin passing through the firing sleeve travel slot such that the firing sleeve moves in the first direction toward the second end with the actuation assembly relative to the elongate rod and the firing sleeve rotates with rotation of the elongate rod.

Optionally, the firing sleeve comprises a firing sleeve body and an extension portion, the outer diameter of the firing sleeve body close to the first end is larger than the maximum outer diameter of the extension portion, and one side of the actuating assembly facing the second end abuts against the firing sleeve body.

Optionally, the minimum distance of the firing sleeve travel slot from the actuation assembly is the difference between the length of the firing sleeve body and the thickness of the through pin.

Optionally, the through pin is a straight-line-shaped through pin, a Y-shaped through pin or a cross-shaped through pin.

Optionally, the method further comprises: one end of the firing piece is connected to the firing sleeve through the through pin, and the other end of the firing piece extends towards the second end and is connected with the head.

Optionally, the rotary button is provided with an angle mark for indicating a rotation angle of the head.

Optionally, the actuating assembly includes an actuating rod, an actuating portion engaged with the handle assembly is disposed on a side of the actuating rod facing the handle assembly, and the accommodating space is disposed on a side of the actuating rod facing away from the handle assembly.

Optionally, the method further comprises: a retraction button coupled to the actuation assembly and in linkage with the actuation assembly, the actuation assembly moving with the retraction button toward the first end of the medical stapler when the retraction button is pulled toward the first end of the medical stapler, the retraction button coupled to an end of the actuation assembly between the actuation rod and the elongated rod.

Optionally, the accommodating space is an accommodating groove or an accommodating hole.

The medical anastomat provided by the invention has the following advantages:

the invention provides a medical anastomat, which is rotationally connected to a rotating button through a slender rod connected to the rotating button, and a firing sleeve can move along with an actuating component in the extending direction of the slender rod so as to realize the firing function of the medical anastomat, so that on one hand, an operator can rotate a nail head of a nail bin assembly on the far end side relative to a body through rotating the rotating button when the medical anastomat is closed and fired, and a proper surgical site is reached to perform anastomosis on tissues at a specified position; on the other hand, make the turn button can drive the rotation of elongate pole through addding the percussion sleeve pipe, avoided inner structure's interference, and convenient operation.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a medical stapler according to an embodiment of the present invention;

FIG. 2 is a schematic view of a medical stapler with a firing housing omitted in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a medical stapler with a firing housing omitted from another perspective of one embodiment of the present invention;

FIG. 4 is a schematic view of a medical stapler with a firing housing omitted from yet another perspective of an embodiment of the present invention;

FIG. 5 is a schematic view of the cooperative arrangement of the elongate shaft, rotary button, actuation assembly and firing sleeve of one embodiment of the present invention;

FIG. 6 is a schematic view of the firing sleeve and the cooperating structure of the elongate rod, rotary button, and actuation assembly in accordance with one embodiment of the present invention.

Reference numerals:

1 medical anastomat 33 jack catch

2 actuating assembly 4 elongated rod

21 actuating rod 41 firing sleeve travel slot

22 advancing teeth 5 rotating button

23 rack 6 firing sleeve

24 the receiving space 61 triggers the sleeve body

3 handle Assembly 62 extension

31 firing handle 63 through pin

32 fixed handle 7 back-off button

8 percussion piece

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

In order to solve the technical problems in the prior art, the invention provides a medical anastomat which comprises an actuating assembly, a handle assembly, a slender rod, a rotary button and a firing sleeve, wherein the firing sleeve moves along the axial direction through the handle assembly and the actuating assembly; the firing sleeve rotates around the slender rod through the rotating button, so that firing and rotation of the nail head on the far-end side can be realized, and the structure composition and the operation are simplified.

The structure of the medical stapler 1 according to an embodiment of the present invention will be further described with reference to fig. 1 to 6. The medical stapler 1 includes a first end (proximal side) and a second end (distal side) in a first direction.

The medical stapler 1 includes a head, an actuating assembly 2, a handle assembly 3, an elongate shaft 4, a rotary button 5, and a firing sleeve 6. The head portion comprises a cartridge assembly and an anvil assembly. Referring to fig. 4 to 6, the actuating assembly 2 is provided with a receiving space 24 penetrating in the first direction. The first direction is the direction of extension of the actuating assembly/elongate rod, i.e., proximal to distal/distal to proximal direction. Referring to fig. 1 to 4, after the handle assembly 3 is held, the actuating assembly 2 is moved in the first direction toward the second end (distal side). The elongated rod 4 extends from a first end (proximal side) of the medical stapler 1 through the accommodation space 24 towards a second end (distal side) of the medical stapler 1. A rotary button 5 is located at a first end (proximal side) of the medical stapler 1 and is connected to the elongated shaft 4. The elongate lever 4 rotates with the rotary button 5. Specifically, the rotary button 5 is operable to rotate about its central axis, thereby rotating the elongate rod 4 about its central axis. Further, the central axis of the rotary button 5 is aligned with the central axis of the elongated rod 4, so as to prevent the elongated rod 4 from rotating obliquely with the rotation of the rotary button 5. A firing sleeve 6 is located on a proximal side of the actuation assembly 2 and sleeved over the elongate rod 4, the firing sleeve 6 moves with the actuation assembly 2 relative to the elongate rod 4 in the first direction toward the second end (distal side), and the firing sleeve 6 rotates with the elongate rod 4. Specifically, the elongated rod 4 extends in the same direction as the actuating assembly 2, whereby the actuating assembly 2 is triggered by the handle assembly 3 to move toward the second end (distal side) of the stapler to push the firing sleeve 6 to move over the elongated rod 4 toward the second end (distal side) of the stapler. Specifically, the firing sleeve 6 is sleeved on the slender rod 4, and when the slender rod 4 rotates along with the rotating button 5, the slender rod drives the firing sleeve 6 to rotate.

In various embodiments of the present invention, the first end of the medical stapler 1 is a proximal side and the second end of the medical stapler 1 is a distal side, the distal side and the proximal side being relative to the operator, wherein the distal side refers to the end farther away from the operator and the proximal side refers to the end closer to the operator. For example, in the view of fig. 1, the distal end side of the medical stapler 1 refers to the left end in the drawing, and the proximal end side refers to the right end in the drawing, which is not described in detail herein.

As shown in FIGS. 1-6, the elongate rod 4 is provided with a firing sleeve travel slot 41 on the side of the actuation assembly 2 facing the second end. As shown in FIG. 6, the firing sleeve 6 is provided with a through pin 63 that passes through the firing sleeve travel slot 41, and a firing plate 8 attached to the head is attached to the firing sleeve 6 by the through pin 63 to connect the head of the stapling instrument to the actuation assembly 2 such that the firing sleeve 6 moves with the actuation assembly 2 relative to the elongate rod 4 in the first direction toward the second end and the firing sleeve 6 rotates with the rotation of the elongate rod 4. In this embodiment, firing sleeve travel slot 41 extends in the first direction. Specifically, a range of movement of the through pin 63 in the first direction is provided by the firing sleeve travel slot 41 such that the through pin 63 may move in the first direction within the firing sleeve travel slot 41; the firing sleeve 41 remains relatively stationary with respect to the elongate rod 4 in the circumferential direction due to the passage of the through pin 63 through the firing sleeve travel slot 41, such that the firing sleeve 41 is able to spin upon the rotation of the elongate rod 4.

In the foregoing embodiments, the through pin 63 may be a straight through pin, a Y-shaped through pin, or a cross-shaped through pin. When the through pin 63 is a straight through pin, the elongated rod 4 is provided with two firing sleeve stroke slots 41, and the two firing sleeve stroke slots 41 correspond to two ends of the straight through pin, so that the two ends of the straight through pin respectively penetrate through the two firing sleeve stroke slots 41. When the through pin 63 is a Y-shaped through pin, the elongate rod 4 is provided with three firing sleeve stroke slots 41, and the three firing sleeve stroke slots 41 correspond to three end points of the Y-shaped through pin, so that the three end points of the Y-shaped through pin respectively penetrate through the three firing sleeve stroke slots 41. By analogy, the present invention also allows for more different combinations of through pins 63 and firing sleeve travel slots 41 to accommodate different firing sleeves 6 and therefore the material and strength of the elongate rod 4.

In the foregoing embodiments, referring to fig. 2, 4 and 5, the firing sleeve 6 includes a firing sleeve body 61 and an extension 62. The outer diameter of the firing sleeve body 61 near the first end is larger than the maximum outer diameter of the extension 62, and the side of the actuating assembly 2 facing the second end abuts against the firing sleeve body 61. Therefore, a step-shaped abutting part is formed by the difference of the outer diameters of the joint of the firing sleeve body 61 and the extending part 62, so that the extending part 62 of the firing sleeve 6 can be arranged in the accommodating space 24 of the actuating assembly 2, the actuating assembly 2 can be accurately abutted against the step-shaped abutting part, and the problem of unbalanced pushing force to the firing sleeve body 61 caused by alignment errors of the firing sleeve 6 and the actuating assembly 2 is avoided. In this embodiment, the through pin 63 is located only on the firing sleeve body 61 and does not extend to the extension 62, thereby reducing the cost of materials and the cost of opening the firing sleeve travel slot 41 to the elongate rod 4.

In the foregoing embodiment, the minimum distance between the firing sleeve travel slot 41 and the actuation assembly 2 is the difference between the length of the firing sleeve body 61 and the thickness of the through pin 63. Therefore, the starting position of the firing sleeve stroke slot 41 is reasonably set, and the situation that the starting position of the firing sleeve stroke slot 41 is too close to the actuating assembly 2 to cause the firing sleeve 6 to shake at the starting position to influence the actuating assembly 2 to actuate the firing sleeve 6 is avoided.

In some embodiments of the present invention, the actuating assembly 2 includes an actuating rod 21, a side of the actuating rod 21 facing the handle assembly 3 is provided with an actuating portion for engaging with the handle assembly 3, and a side of the actuating rod 21 facing away from the handle assembly 3 is provided with the accommodating space 24. Thus, the elongated rod 4 and the actuating part cooperating with the handle assembly 3 are located in mutually independent spaces by the actuating rod 21, avoiding mutual influence during actuation and rotation.

In some embodiments of the present invention, the accommodating space 24 may be an accommodating groove or an accommodating hole, which is not limited in the present invention.

In some embodiments of the invention, the medical stapler 1 further comprises a retraction button 7. The retraction button 7 is connected to the actuating assembly 2 and is coupled to the actuating assembly 2. When the retraction button 7 is pulled towards the first end of the medical stapler 1, the actuation assembly 2 moves with the retraction button 7 towards the first end of the medical stapler 1. In particular, the end of the retraction button 7 connected to the actuation assembly 2 is located between the actuation rod 21 and the elongate rod 4. Specifically, the retraction button 7 may include an operating part and a connecting part, which are connected to each other to be interlocked, the operating part being operated by the operator, and the connecting part being located between the actuating lever 21 and the elongated rod 4. In various embodiments, the medical stapler 1 further comprises a firing housing, and the operating portion protrudes from the firing housing for operation by an operator. When the operation part is operated by an operator to move towards the first end of the medical anastomat 1, the connecting part moves towards the first end of the medical anastomat 1 along with the operation part, so that the actuating component 2 is driven to move towards the first end of the medical anastomat 1. In this embodiment, the retraction button 7 is not in contact with the elongate lever 4, thereby avoiding the elongate lever 4 from affecting the rotation of the elongate lever 4.

In some embodiments of the invention, the rotary button 5 may be provided with an angle mark for indicating a rotation angle of the head. The angle markings may be numerical markings or any other form of marking. Therefore, the operator can conveniently and intuitively know the current rotation angle of the head, the initial rotation position of the head and the like. The rotary button 5 may be a cylindrical knob, a polygonal prism knob or other irregular cylindrical knob, which should not be construed as a limitation of the present invention.

In some embodiments of the present invention, the handle assembly 3 may include a firing handle 31 and a fixed handle 32. A pawl 33 may be provided on the firing handle 31 to engage the actuation assembly 2. Specifically, the method is described. The side of the actuation rod 21 towards the second end may also be provided with a pushing tooth 22, which pushing tooth 22 may cooperate with a pawl 33 provided on the firing handle 3, in a manner described in detail below. The actuation rod 21 has a rack 23 extending from a first end to a second end, and the rack 23 is configured to engage with a pawl 33 disposed on the firing handle 31 in a manner described in detail below. The middle of the rack 23 may be provided with a rack slot that allows for abduction of some components of the firing handle 31.

Regarding the rotation operation of the head, an operator operates the rotation button 5 to rotate, so as to drive the slender rod 4 and the firing sleeve 6 to rotate, so as to drive the head of the anastomat to rotate, and the rotation of the head and the deflection of the head controlled by the rotation button 5 can be alternately carried out, so that the position of the tissue to be anastomosed can be accurately positioned until the head of the anastomat is adjusted to a proper operation position.

The firing process of the medical stapler is further described below with reference to fig. 1 to 4. Initially, the end of the firing handle 31 distal from the actuating assembly 2 is distal from the fixed handle 32. The actuating lever 21 is now in the actuating lever initial position. The operator grasps the firing handle 31 such that an end of the firing handle 31 distal from the actuating assembly 2 rotates closer to the fixed handle 32 in a direction toward the fixed handle 32. At this time, the claw 33 of the firing handle 31 contacts the pushing tooth 22 of the actuating rod 21 and pushes the pushing tooth 22 toward the distal end side of the medical stapler 1, and the pushing tooth 22 drives the actuating rod 21 to move toward the distal end side of the medical stapler 1, that is, the actuating rod 21 moves in the left direction in fig. 1, and at this time, the actuating rod 21 moves a distance from the initial position of the actuating rod 21 toward the distal end side of the medical stapler 1, so that the firing sleeve 6 moves a distance along the firing sleeve stroke slot 41 of the elongated rod 4 from the initial position of the firing sleeve 6 toward the distal end side of the medical stapler 1, and at this time, the cartridge assembly and the anvil assembly of the head are relatively closed.

The operator releases the firing handle 31 and the firing handle 31 returns to the initial position with the pawl 33 positioned to correspond to the rack 23 position of the actuation bar 21. When the operator holds the firing handle 31 again, the jaw 33 of the firing handle 31 contacts the rack 23 and pushes the rack 23 to drive the actuating rod 21 to move towards the distal end of the medical stapler 1 when the end of the firing handle 31 away from the actuating assembly 2 is rotated towards the fixed handle 32, so that the firing sleeve 6 continues to move towards the distal end of the medical stapler 1 along the firing sleeve stroke slot 41 of the slender rod 4, thereby firing the stapler.

After the stapler is operated to staple the tissue, the operator can operate the retraction button 7 to move toward the proximal side of the medical stapler 1, and the retraction button 7 drives the actuating assembly 2 to move toward the distal side of the medical stapler 1 to return to the initial position.

The medical anastomat provided by the invention has the following advantages:

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A medical stapler having a first end and a second end along a first direction, the medical stapler comprising:

the head part comprises a nail bin assembly and a nail anvil assembly;

the actuating assembly is provided with an accommodating space which is communicated along a first direction;

a handle assembly that, when gripped, moves the actuation assembly in the first direction toward the second end;

the slender rod penetrates through the accommodating space from the first end of the medical anastomat to extend to the second end of the medical anastomat;

a rotation button located at a first end of the medical stapler and connected to the elongated shaft, the elongated shaft rotating with the rotation button; and

a firing sleeve positioned on a side of the actuation assembly facing the second end and sleeved outside the elongated rod, wherein the firing sleeve moves with the actuation assembly relative to the elongated rod in the first direction to the second end, and the firing sleeve rotates with the elongated rod and drives the head to rotate.

2. The medical stapler of claim 1, wherein said elongated rod is provided with a firing sleeve travel slot on a side of said actuating assembly toward said second end, said firing sleeve being provided with a through pin passing through said firing sleeve travel slot such that said firing sleeve moves in said first direction toward said second end with said actuating assembly relative to said elongated rod and said firing sleeve rotates with rotation of said elongated rod.

3. The medical stapler of claim 2, wherein the firing sleeve comprises a firing sleeve body and an extension, wherein an outer diameter of the firing sleeve body proximate the first end is greater than a maximum outer diameter of the extension, and wherein a side of the actuation assembly toward the second end abuts the firing sleeve body.

4. The medical stapler of claim 3, wherein the minimum distance of the firing sleeve travel slot from the actuation assembly is the difference between the length of the firing sleeve body and the thickness of the through pin.

5. The medical stapler of claim 2, wherein the through pin is a straight through pin, a Y-shaped through pin, or a cross-shaped through pin.

6. The medical stapler of claim 2, further comprising:

one end of the firing piece is connected to the firing sleeve through the through pin, and the other end of the firing piece extends towards the second end and is connected with the head.

7. The medical stapler of claim 6, wherein the rotary button is provided with an angle mark for indicating a rotation angle of the head.

8. The medical stapler of claim 1, wherein the actuating assembly comprises an actuating rod, wherein an actuating portion engaged with the handle assembly is disposed on a side of the actuating rod facing the handle assembly, and the accommodating space is disposed on a side of the actuating rod facing away from the handle assembly.

9. The medical stapler of claim 6, further comprising:

a retraction button coupled to the actuation assembly and in linkage with the actuation assembly, the actuation assembly moving with the retraction button toward the first end of the medical stapler when the retraction button is pulled toward the first end of the medical stapler, the retraction button coupled to an end of the actuation assembly between the actuation rod and the elongated rod.

10. The medical stapler of claim 1, wherein the receiving space is a receiving groove or a receiving hole.