Medical stapler

Abstract

The present invention provides a medical stapler, which has a first end and a second end along a first direction, and comprises: a head, including a stapler assembly and a staple anvil assembly; an actuating assembly, provided with a accommodating space penetrating along the first direction; a handle assembly, which is held to move toward the second end in the first direction; a slender rod, extending from the first end of the medical stapler through the accommodating space to the second end; a rotating button, located at the first end and connected to the slender rod, the slender rod rotates with the rotating button; and a firing sleeve, located at a side of the actuating assembly facing the second end and sleeved with the slender rod, the firing sleeve moves toward the second end in the first direction with the actuating assembly, and the firing sleeve rotates with the slender rod and drives the head to rotate. The present invention rotates the slender rod and the firing sleeve sleeved on the slender rod by rotating the button, so that when the medical stapler is used, the head on the distal side of the stapler can be rotated to staple tissue at a specified position.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a medical stapler. Background Art

[0002] Digestive tract diseases are one of the most common diseases in humans. During the treatment process, medical staplers are often used to replace the doctor's manual operation to anastomose physiological tissues such as the digestive tract. Medical staplers are a common surgical instrument, most of which use axial internal stapling to form end-to-end or end-to-side anastomosis of physiological tissues such as the esophagus, stomach, and intestines during surgery. During the anastomosis, the two sections of tissue are contained in the medical stapler. After the firing is completed, a circular anastomosis is formed on the tissue, reconstructing the human body channel.

[0003] In the prior art, a medical stapler includes a medical stapler body, a head, and an operating handle movably connected to the medical stapler body. The medical stapler includes a firing mechanism that cooperates with the operating handle. The head includes a staple magazine and a staple magazine rack, a staple magazine assembly, and an anvil assembly. In the present invention, the distal side and the proximal side are relative to the operator. The end closer to the operator is the proximal side, and the end farther from the operator, that is, the end closer to the surgical site is the distal side. During surgery, the staple magazine assembly and the anvil assembly are closed, and the operating handle is held to fire. The firing structure can push the staples toward the tissue, and the tissue is stapled by the formation of the staples in the staple magazine assembly at the anvil assembly.

[0004] In the application of existing medical staplers, in order to staple tissues at a specified position, the operator needs to adjust the position of the head so that the head can be deflected to a certain angle. At the same time, the head can also rotate 360 ​​degrees relative to the body to facilitate the head to reach the predetermined surgical site. Summary of the invention

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a medical stapler, which can rotate a slender rod and a firing sleeve sleeved on the slender rod by rotating a button, so that when the medical stapler is used, the head on the distal end of the stapler can be rotated to staple tissues at a designated position.

[0006] An embodiment of the present invention provides a medical stapler, which has a first end and a second end along a first direction, and comprises: a head, including a staple magazine assembly and a staple anvil assembly; an actuating assembly, wherein the actuating assembly is provided with a accommodating space extending along the first direction; a handle assembly, wherein after the handle assembly is gripped, the actuating assembly is moved toward the second end in the first direction; a slender rod extending from the first end of the medical stapler through the accommodating space toward the second end of the medical stapler; a rotating button, located at the first end of the medical stapler and connected to the slender rod, wherein the slender rod rotates with the rotating button; and a firing sleeve, located at a side of the actuating assembly facing the second end and sleeved on the outside of the slender rod, wherein the firing sleeve moves toward the second end in the first direction relative to the slender rod with the actuating assembly, and wherein the firing sleeve rotates with the slender rod and drives the head to rotate.

[0007] Optionally, the slender rod is provided with a firing sleeve travel groove on the side of the actuating assembly toward the second end, and the firing sleeve is provided with a through pin passing through the firing sleeve travel groove, so that the firing sleeve moves toward the second end in the first direction relative to the slender rod along with the actuating assembly, and the firing sleeve rotates along with the rotation of the slender rod.

[0008] Optionally, the firing sleeve includes 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 the side of the actuating assembly facing the second end abuts against the firing sleeve body.

[0009] Optionally, the minimum distance between the firing sleeve travel groove and the actuating assembly is the difference between the length of the firing sleeve body and the thickness of the through pin.

[0010] Optionally, the through pin is a straight through pin, a Y-shaped through pin or a cross-shaped through pin.

[0011] Optionally, it further includes: a firing piece, one end of which is connected to the firing sleeve through the through pin, and the other end of the firing piece extends toward the second end and is connected to the head.

[0012] Optionally, the rotation button is provided with an angle mark, and the angle mark is used to indicate the rotation angle of the head.

[0013] Optionally, the actuating assembly comprises an actuating rod, a side of the actuating rod facing the handle assembly is provided with an actuating portion cooperating with the handle assembly, and a side of the actuating rod facing away from the handle assembly is provided with the accommodating space.

[0014] Optionally, it also includes: a retraction button, connected to the actuating assembly and linked with the actuating assembly, when the retraction button is pulled toward the first end of the medical stapler, the actuating assembly moves toward the first end of the medical stapler along with the retraction button, and one end of the retraction button connected to the actuating assembly is located between the actuating rod and the slender rod.

[0015] Optionally, the accommodating space is an accommodating groove or an accommodating hole.

[0016] The medical stapler provided by the present invention has the following advantages:

[0017] The present invention provides a medical stapler, which is rotatably connected to a rotating button through a slender rod connected to a rotating button. A firing sleeve can move along with an actuating assembly in the extension direction of the slender rod to realize the firing function of the medical stapler. Therefore, on the one hand, before the medical stapler of the present invention is closed and fired, the operator can rotate the rotating button to rotate the nail head of the nail magazine assembly on the distal side relative to the body to reach a suitable surgical site for tissue anastomosis at a designated position; on the other hand, by adding a firing sleeve, the rotating button can drive the slender rod to rotate, thereby avoiding interference with the internal structure and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0019] Figure 1 is a schematic structural diagram of a medical stapler according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a medical stapler with a firing housing omitted according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a medical stapler with a firing housing omitted from another perspective of an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a medical stapler with a firing shell omitted from another perspective of an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the matching structure of the slender rod, the rotating button, the actuating assembly and the firing sleeve according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the matching structure of a firing sleeve, a slender rod, a rotating button, and an actuating assembly according to an embodiment of the present invention.

[0025] Reference numerals:

[0026] 1 Medical stapler 33 jaws

[0027] 2 Actuating assembly 4 Slender rod

[0028] 21 actuating rod 41 firing sleeve travel groove

[0029] 22 Pusher tooth 5 Rotary button

[0030] 23 rack 6 firing sleeve

[0031] 24 Accommodating space 61 Firing sleeve body

[0032] 3 Handle assembly 62 extension

[0033] 31 Firing handle 63 Through pin

[0034] 32 Fixed handle 7 Back button

[0035] 8 Trigger DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0037] In order to solve the technical problems in the prior art, the present invention provides a medical stapler, which includes an actuating assembly, a handle assembly, a slender rod, a rotating button and a firing sleeve. The firing sleeve is moved in an axial direction by the handle assembly and the actuating assembly; the firing sleeve is rotated around the slender rod by the rotating button, thereby realizing the firing and the rotation of the nail head on the distal side, simplifying the structural composition and surgical operation.

[0038] Combine the following Figures 1 to 6 The structure of a medical stapler 1 according to an embodiment of the present invention is further described. The medical stapler 1 includes a first end (proximal end) and a second end (distal end) along a first direction.

[0039] The medical stapler 1 comprises a head, an actuating assembly 2, a handle assembly 3, an elongated rod 4, a rotating button 5 and a firing sleeve 6. The head comprises a staple cartridge assembly and a staple anvil assembly. Figures 4 to 6 The actuating assembly 2 is provided with a receiving space 24 extending in a first direction. The first direction is the extending direction of the actuating assembly / slender rod, i.e., the direction from the proximal side to the distal side / from the distal side to the proximal side. Figures 1 to 4, after the handle assembly 3 is grasped, the actuating assembly 2 is moved toward the second end (distal side) in the first direction. The slender rod 4 extends from the first end (proximal side) of the medical stapler 1 through the accommodating space 24 to the second end (distal side) of the medical stapler 1. The rotating button 5 is located at the first end (proximal side) of the medical stapler 1 and is connected to the slender rod 4. The slender rod 4 rotates with the rotating button 5. Specifically, the rotating button 5 can be operated to rotate along its central axis, thereby driving the slender rod 4 to rotate along its central axis. Furthermore, the central axis of the rotating button 5 and the central axis of the slender rod 4 are located on the same straight line, thereby preventing the slender rod 4 from tilting and rotating with the rotation of the rotating button 5. The firing sleeve 6 is located at the proximal side of the actuating assembly 2 and is sleeved on the outside of the slender rod 4. The firing sleeve 6 moves with the actuating assembly 2 relative to the slender rod 4 in the first direction toward the second end (distal side), and the firing sleeve 6 rotates with the slender rod 4. Specifically, the slender rod 4 and the actuating assembly 2 have the same extension direction, so that 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 on the slender rod 4 to move 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 with the rotating button 5, the firing sleeve 6 is driven to rotate.

[0040] In various embodiments of the present invention, the first end of the medical stapler 1 is the proximal side, and the second end of the medical stapler 1 is the distal side. The distal side and the proximal side are relative to the operator, wherein the distal side refers to the end farther from the operator, and the proximal side refers to the end closer to the operator. Figure 1 From the perspective of FIG. 1 , the distal end of the medical stapler 1 refers to the left end in the figure, and the proximal end refers to the right end in the figure, which will not be described in detail here.

[0041] like Figures 1 to 6 As shown, the elongated rod 4 is provided with a firing sleeve travel groove 41 on one side of the actuating assembly 2 facing the second end. Figure 6As shown, the firing sleeve 6 is provided with a through pin 63 passing through the firing sleeve stroke groove 41, and the firing piece 8 connected to the head is connected to the firing sleeve 6 through the through pin 63 to connect the actuating assembly 2 and the head of the stapler, so that the firing sleeve 6 moves toward the second end in the first direction relative to the slender rod 4 with the actuating assembly 2, and the firing sleeve 6 rotates with the rotation of the slender rod 4. In this embodiment, the firing sleeve stroke groove 41 extends along the first direction. Specifically, the firing sleeve stroke groove 41 provides a range for the through pin 63 to move in the first direction, so that the through pin 63 can move in the first direction within the range of the firing sleeve stroke groove 41; because the through pin 63 passes through the firing sleeve stroke groove 41, the firing sleeve 41 and the slender rod 4 remain relatively stationary in the circumferential direction, so that the firing sleeve 41 can rotate with the rotation of the slender rod 4.

[0042] In the aforementioned embodiment, 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 slender rod 4 is provided with two firing sleeve travel grooves 41, and the two firing sleeve travel grooves 41 correspond to the two ends of the straight through pin, so that the two ends of the straight through pin pass through the two firing sleeve travel grooves 41 respectively. When the through pin 63 is a Y-shaped through pin, the slender rod 4 is provided with three firing sleeve travel grooves 41, and the three firing sleeve travel grooves 41 correspond to the three end points of the Y-shaped through pin, so that the three end points of the Y-shaped through pin pass through the three firing sleeve travel grooves 41 respectively. By analogy, the present invention can also realize more different cooperations of the through pin 63 and the firing sleeve travel groove 41 to adapt to different firing sleeves 6 and thus the materials and strengths of the slender rod 4.

[0043] In the aforementioned embodiment, see Figure 2 , Figure 4 and Figure 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. Thus, a step-shaped abutment portion is formed by the difference in outer diameters at the junction of the firing sleeve body 61 and the extension 62, so that the extension 62 of the firing sleeve 6 can be within the accommodating space 24 of the actuating assembly 2, so that the actuating assembly 2 can accurately abut against the step-shaped abutment portion, avoiding the problem of uneven pushing force on the firing sleeve body 61 caused by the alignment error between the firing sleeve 6 and the actuating assembly 2. In this embodiment, the through pin 63 is only located in the firing sleeve body 61 and does not extend to the extension 62, thereby reducing the material cost and the cost of opening the firing sleeve travel groove 41 for the slender rod 4.

[0044] In the aforementioned embodiment, the minimum distance between the firing sleeve travel groove 41 and the actuating assembly 2 is the difference between the length of the firing sleeve body 61 and the thickness of the through pin 63. Thus, the starting position of the firing sleeve travel groove 41 is reasonably set to avoid the firing sleeve travel groove 41 starting position being too close to the actuating assembly 2, thereby preventing the firing sleeve 6 from shaking at the starting position and affecting the actuation of the actuating assembly 2 on the firing sleeve 6.

[0045] In some embodiments of the present invention, the actuating assembly 2 includes an actuating rod 21, and the actuating portion cooperating with the handle assembly 3 is provided on the side of the actuating rod 21 facing the handle assembly 3, and the accommodating space 24 is provided on the side of the actuating rod 21 facing away from the handle assembly 3. Thus, the actuating rod 21 enables the elongated rod 4 and the actuating portion cooperating with the handle assembly 3 to be located in mutually independent spaces, thereby avoiding mutual influence during actuation and rotation.

[0046] In some embodiments of the present invention, the accommodation space 24 may be an accommodation groove or an accommodation hole, but the present invention is not limited thereto.

[0047] In some embodiments of the present invention, the medical stapler 1 further includes a retraction button 7. The retraction button 7 is connected to the actuating assembly 2 and is linked to the actuating assembly 2. When the retraction button 7 is pulled toward the first end of the medical stapler 1, the actuating assembly 2 moves toward the first end of the medical stapler 1 along with the retraction button 7. Specifically, one end of the retraction button 7 connected to the actuating assembly 2 is located between the actuating rod 21 and the elongated rod 4. Specifically, the retraction button 7 may include an operating portion and a connecting portion, the operating portion and the connecting portion are connected to each other so that the operating portion and the connecting portion are linked, the operating portion is operated by an operator, and the connecting portion is located between the actuating rod 21 and the elongated rod 4. In various embodiments, the medical stapler 1 further includes a firing shell, and the operating portion protrudes from the firing shell for the operator to operate. When the operating portion is operated by the operator to move toward the first end of the medical stapler 1, the connecting portion moves along with the operating portion toward the first end of the medical stapler 1, thereby driving the actuating assembly 2 to move toward the first end of the medical stapler 1. In this embodiment, the retraction button 7 does not contact the slender rod 4, thereby avoiding the slender rod 4 and avoiding affecting the rotation of the slender rod 4.

[0048] In some embodiments of the present invention, the rotation button 5 may be provided with an angle mark, and the angle mark is used to indicate the rotation angle of the head. The angle mark may be a digital mark or a mark in any other form. Thus, it is convenient for the operator to intuitively understand the current rotation angle of the head and the initial rotation position of the head. The rotation button 5 may be a cylindrical knob, a polygonal knob or a cylindrical knob of other irregular shapes, but the present invention is not limited thereto.

[0049] In some embodiments of the present invention, the handle assembly 3 may include a firing handle 31 and a fixed handle 32. The firing handle 31 may be provided with a claw 33 to cooperate with the actuating assembly 2. Specifically. A propulsion tooth 22 may also be provided on the side of the actuating rod 21 facing the second end, and the propulsion tooth 22 may cooperate with the claw 33 provided on the firing handle 3, and the specific cooperation method is described in detail below. The actuating rod 21 is provided with a rack 23 extending from the first end to the second end, and the rack 23 may cooperate with the claw 33 provided on the firing handle 31, and the specific cooperation method is described in detail below. A rack groove may be provided in the middle part of the rack 23, and the rack groove realizes the giving way of some components of the firing handle 31.

[0050] Regarding the rotation operation of the head, the operator operates the rotating button 5 to rotate, driving the slender rod 4 and the firing sleeve 6 to rotate, thereby driving the head of the stapler to rotate. The rotation of the head and the rotation button 5 to control the deflection of the head can be performed alternately to accurately locate the position of the tissue to be stapled, until the head of the stapler is adjusted to a suitable surgical position.

[0051] Combine the following Figures 1 to 4 The firing process of the medical stapler is further described. Initially, the end of the firing handle 31 away from the actuating assembly 2 is away from the fixed handle 32. At this time, the actuating rod 21 is in the initial position of the actuating rod. The operator holds the firing handle 31 so that the end of the firing handle 31 away from the actuating assembly 2 rotates toward the fixed handle 32 and approaches the fixed handle 32. At this time, the claw 33 of the firing handle 31 contacts the propulsion tooth 22 of the actuating rod 21 and pushes the propulsion tooth 22 toward the distal end of the medical stapler 1. The propulsion tooth 22 drives the actuating rod 21 to move toward the distal end of the medical stapler 1, that is, the actuating rod 21 moves along the Figure 1 The actuating rod 21 moves a certain distance from the initial position of the actuating rod 21 toward the distal end of the medical stapler 1, thereby causing the firing sleeve 6 to move a certain distance along the firing sleeve travel groove 41 of the slender rod 4 from the initial position of the firing sleeve 6 toward the distal end of the medical stapler 1, and the staple magazine assembly and the staple anvil assembly of the head are relatively closed.

[0052] The operator releases the firing handle 31, and the firing handle 31 returns to the initial position, and the position of the claw 33 corresponds to the position of the rack 23 of the actuating rod 21. The operator holds the firing handle 31 again, so that the end of the firing handle 31 away from the actuating assembly 2 rotates toward the fixed handle 32, and the claw 33 of the firing handle 31 contacts the rack 23, and pushes the rack 23 to drive the actuating rod 21 to move toward the distal end of the medical stapler 1, so that the firing sleeve 6 continues to move toward the distal end of the medical stapler 1 along the firing sleeve travel groove 41 of the slender rod 4, thereby firing the stapler.

[0053] After operating the stapler to staple tissues, 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.

[0054] The medical stapler provided by the present invention has the following advantages:

[0055] The present invention provides a medical stapler, which is rotatably connected to a rotating button through a slender rod connected to a rotating button. A firing sleeve can move along with an actuating assembly in the extension direction of the slender rod to realize the firing function of the medical stapler. Therefore, on the one hand, before the medical stapler of the present invention is closed and fired, the operator can rotate the rotating button to rotate the nail head of the nail magazine assembly on the distal side relative to the body to reach a suitable surgical site for tissue anastomosis at a designated position; on the other hand, by adding a firing sleeve, the rotating button can drive the slender rod to rotate, thereby avoiding interference with the internal structure and facilitating operation.

[0056] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A medical stapler, characterized in that: The medical stapler has a first end and a second end along a first direction, and the medical stapler comprises: A head, including a nail magazine assembly and a nail anvil assembly; An actuating assembly, wherein the actuating assembly is provided with an accommodating space penetrating along a first direction; a handle assembly, wherein when the handle assembly is held, the actuating assembly moves in the first direction toward the second end; A slender rod extending from the first end of the medical stapler through the accommodating space to the second end of the medical stapler; a rotation button, located at the first end of the medical stapler and connected to the slender rod, wherein the slender rod rotates with the rotation button; and a firing sleeve, located on a side of the actuating assembly facing the second end and sleeved on the outside of the elongated rod, wherein the firing sleeve moves along with the actuating assembly relative to the elongated rod toward the second end in the first direction; A firing piece, one end of which is connected to the firing sleeve, and the other end of which extends toward the second end and is connected to the head, so that the firing sleeve rotates with the slender rod and drives the head to rotate.

2. The medical stapler according to claim 1, characterized in that: The slender rod is provided with a firing sleeve travel groove on the side of the actuating assembly facing the second end, and the firing sleeve is provided with a through pin passing through the firing sleeve travel groove, so that the firing sleeve moves toward the second end in the first direction relative to the slender rod along with the actuating assembly, and the firing sleeve rotates along with the rotation of the slender rod.

3. The medical stapler according to claim 2, characterized in that: 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 the side of the actuating assembly facing the second end abuts against the firing sleeve body.

4. The medical stapler according to claim 3, characterized in that: The minimum distance between the firing sleeve travel groove and the actuating assembly is the difference between the length of the firing sleeve body and the thickness of the through pin.

5. The medical stapler according to claim 2, characterized in that: The through-type is a straight through-type, a Y-type or a cross-type.

6. The medical stapler according to claim 2, characterized in that: One end of the firing piece is connected to the firing sleeve through the through pin.

7. The medical stapler according to claim 6, characterized in that: The rotation button is provided with an angle mark, and the angle mark is used to indicate the rotation angle of the head.

8. The medical stapler according to claim 1, characterized in that: The actuating assembly comprises an actuating rod, a side of the actuating rod facing the handle assembly is provided with an actuating portion cooperating with the handle assembly, and a side of the actuating rod facing away from the handle assembly is provided with the accommodating space.

9. The medical stapler according to claim 8, characterized in that: Also includes: A retraction button is connected to the actuating assembly and is linked with the actuating assembly. When the retraction button is pulled toward the first end of the medical stapler, the actuating assembly moves toward the first end of the medical stapler along with the retraction button. One end of the retraction button connected to the actuating assembly is located between the actuating rod and the slender rod.

10. The medical stapler according to claim 1, characterized in that: The accommodating space is an accommodating groove or an accommodating hole.

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