Minimally invasive surgical clamp

Abstract

The invention provides a minimally invasive surgery clamp for the surgery department. The minimally invasive surgery clamp is used for solving the technical problem that when existing laparoscopic surgery clamps are used, the axial joint breakage risk exists. The minimally invasive surgical clamp comprises a clamping body, a sleeve, a handle and an operating unit, wherein the sleeve is of a columnar structure with a hollow channel; the clamping body is located in the hollow channel of the sleeve and comprises a forceps handle and a forceps head which is arranged at the front end of the forceps handle and used for clamping an operation target object, and the forceps head can extend out of the front end of the sleeve; the handle is connected with the rear end of the sleeve; the operating unit is located on the handle and comprises a telescopic assembly used for controlling the clamping body to stretch out and draw back and an opening and closing assembly used for controlling the clamping body to be opened and closed, the surgical clamp controls stretching out and drawing back and opening and closing of the clamping body through the operating unit, and compared with existing laparoscope surgical forceps, a shaft joint is removed, the phenomenon of shaft joint breakage does not exist, and safety is high; meanwhile, the structure is simple, and actual use is easier.

Description

Technical Field

[0001] The invention relates to a surgical instrument, in particular to a minimally invasive surgical clip. Background Art

[0002] Minimally invasive surgery is used in general surgery, urology, appendectomy, cholecystectomy, gastrointestinal tumors and other surgeries. It has the advantages of less trauma, smaller incisions, and faster wound recovery.

[0003] Existing minimally invasive surgeries generally use laparoscopic surgical forceps, which include a chuck, a chuck arm and a handle, wherein the chuck and the chuck arm are connected by an axial joint. When working, the opening and closing of the chuck is controlled by the handle to complete the surgery.

[0004] The chucks of existing laparoscopic surgical forceps are generally made of stainless steel or titanium alloy, which are extremely difficult to process at a small size and have the risk of axial joint fracture during use. In addition, with the development of minimally invasive surgery, people have higher and higher requirements for the small size of wounds. The minimum radial size of existing chucks can only be 2.5-3mm. If this type of laparoscopic surgical forceps is used, it cannot be applied to minimally invasive surgery that has higher requirements for the size of minimally invasive wounds. Summary of the invention

[0005] The purpose of the present invention is to provide a minimally invasive surgical clip, which is used to solve the technical problems such as the risk of axial joint fracture when using the existing laparoscopic surgical forceps.

[0006] In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A minimally invasive surgical clip, which is special in that it includes a clamping body, a sleeve, a handle and an operating unit;

[0008] The sleeve is a columnar structure with a hollow channel; the clamping body is located in the hollow channel of the sleeve, and includes a clamp handle and a clamp head arranged at the front end of the clamp handle for clamping the surgical object; the clamp head can extend out of the front end of the sleeve; the handle is connected to the rear end of the sleeve;

[0009] The operating unit is located on the handle, and comprises a telescopic component for controlling the telescopic movement of the clamping body and an opening and closing component for controlling the opening and closing of the clamping body.

[0010] Further, the pliers head includes a movable jaw assembly and a fixed jaw assembly;

[0011] The fixed claw assembly includes a fixed claw, and the movable claw assembly includes a movable claw; wherein the opening and closing assembly includes a pull rope; one end of the pull rope is arranged on the handle, and the other end passes through the hollow channel of the sleeve and is connected to the movable claw, so as to pull the movable claw head away from the fixed claw head;

[0012] Alternatively, the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw; wherein the opening and closing assembly includes two pull ropes; one end of the pull rope is respectively arranged on the handle, and the other end of the pull rope passes through the hollow channel of the sleeve and is respectively connected to the two movable claws, so as to pull the two movable claw heads away from the fixed claw head in opposite directions;

[0013] Alternatively, the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw; wherein the opening and closing assembly includes two pull ropes; one end of the pull rope is respectively arranged on the handle, and the other end of the pull rope passes through the hollow channel of the sleeve and is respectively connected to the two movable claws, so as to pull the two movable claw heads away from the fixed claw head in the same direction;

[0014] Alternatively, the fixed claw assembly includes two fixed claws, and the movable claw assembly includes a movable claw located between the two fixed claws; wherein the opening and closing assembly includes a pull rope; one end of the pull rope is set on the handle, and the other end passes through the hollow channel of the sleeve and is connected to the movable claw, which is used to pull the movable claw head away from the two fixed claw heads.

[0015] Further, the pliers head includes two movable claw assemblies;

[0016] Each movable claw assembly includes a movable claw; wherein the opening and closing assembly includes two pull ropes, one end of which is respectively arranged on the handle, and the other end of which passes through the hollow channel of the sleeve and is respectively connected to the two movable claws, so as to pull the heads of the two movable claws apart;

[0017] Alternatively, one movable claw assembly includes one movable claw, and the other movable claw assembly includes two movable claws; the opening and closing assembly includes three pull ropes, one end of which is respectively arranged on the handle, and the other end passes through the hollow channel of the sleeve and is respectively connected to the three movable claws, so as to pull the heads of the three movable claws away in two directions or three directions.

[0018] Furthermore, the material of the clamping body is titanium-nickel alloy or titanium-nickel memory alloy. Titanium-nickel memory alloy is a high-performance biological material that is very safe to use in the human body, thereby improving the safety of the surgical process; the material has very good elasticity and is easy to process and can be shaped according to design requirements, thereby increasing the scope of application; the material has a large resilience, which can improve the stability of the clamping.

[0019] Furthermore, an arc-shaped bend is provided between the movable claw and an adjacent movable claw or fixed claw to increase the clamping force.

[0020] Furthermore, the telescopic assembly includes a push plate and a push block connected to the push plate, the lower end of the push block is connected to the tail of the clamp handle, and the push plate is pushed, the push plate drives the push block to move, and the push block further drives the clamp handle to extend or retract, thereby controlling the telescopic and extension of the clamp body.

[0021] Further, the opening and closing assembly includes at least one knob arranged on the handle; one end of the pull rope is wound around the corresponding knob;

[0022] The movable claw is provided with a through hole, and the other end of the pull rope is fixed on the through hole on the movable claw.

[0023] Further, the sleeve is a prismatic hollow tube; or, the sleeve is a cylindrical hollow tube; or, the sleeve is a hollow tube, and a section close to the clamp head is prismatic, and a section away from the clamp head is cylindrical.

[0024] Furthermore, the pull rope is a single-strand rope or a multi-strand rope; the material of the pull rope is titanium-nickel alloy or nylon or aramid fiber, all of which are high-strength materials with stable tensile force.

[0025] Furthermore, the diameter or width of the hollow channel of the sleeve is 2 mm±0.1 mm, and thus can be applied to minimally invasive surgeries that have higher requirements on the size of minimally invasive incisions.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The present invention provides a minimally invasive surgical clamp, which includes a clamping body, a sleeve, a handle and an operating unit. The operating unit controls the extension and opening of the clamping body. Compared with the existing laparoscopic surgical forceps, the axial joint is removed, there is no axial joint breakage phenomenon, and the safety is higher; at the same time, the structure is simple and easier to use in practice.

[0028] 2. The clamping body of the present invention has a variety of designs, that is, it can be designed as a movable claw assembly and a fixed claw assembly, or it can be designed as two movable claw assemblies, thereby realizing a variety of different types of two-claw clamping bodies and three-claw clamping bodies. The diversified design improves the scope of use of the present invention.

[0029] 3. The clamping body of the present invention is made of titanium-nickel memory alloy, because titanium-nickel memory alloy is a high-performance biological material, which is very safe to use in the human body, thereby improving the safety of the surgical process; the material has very good elasticity and is easy to process and can be shaped according to design requirements, thereby increasing the scope of application; the material has a large resilience, which can improve the stability of the clamping.

[0030] 4. The pull rope of the present invention can be made of high-strength materials such as titanium-nickel alloy, nylon or aramid fiber, which can enhance the tensile force of the pull rope and ensure that the movable claws of the clamping body are pulled open smoothly, thereby ensuring the smooth progress of the surgical process.

[0031] 5. The size of the hollow channel of the cannula of the present invention can be 2 mm ± 0.1 mm, and can be applied to minimally invasive surgeries that have higher requirements on the size of minimally invasive incisions.

[0032] 6. The present invention provides an arc-shaped bend between the movable claw and the adjacent movable claw or fixed claw to form elasticity for increasing the clamping force, which is similar to the bend of a straight hairpin.

[0033] Instruction Manual

[0034] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0035] Figure 2 It is a structural cross-sectional view of Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the clamp head in the closed state in the first embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the open state of the clamp head in the first embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the pliers head retracted state in the first embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the pliers head in the first embodiment of the present invention in the pushed-out state;

[0040] Figure 7 It is a schematic diagram of the opening and closing state of a movable claw in the first embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the two movable claws opening and closing in opposite directions in the second embodiment of the present invention;

[0042] Fig. 9 This is a schematic diagram of the two movable claws opening and closing in the same direction in the third embodiment of the present invention;

[0043] Fig.10 This is a schematic diagram of the opening and closing state of a movable claw in the fourth embodiment of the present invention;

[0044] Fig.11 Schematic diagram of the opening and closing state of two movable claws in Embodiment 5 of the present invention;

[0045] Fig.12 Schematic diagram of the opening and closing states of three movable claws in Embodiment 6 of the present invention.

[0046] The reference numerals are as follows:

[0047] 1- pliers head, 2- sleeve, 3- handle, 4- operating unit, 5- pull rope, 6- push plate, 7- push block, 8- knob. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] Embodiment 1

[0050] like Figure 1 As shown, this embodiment provides a minimally invasive surgical clip, comprising a clamp body, a sleeve 2, a handle 3 and an operating unit 4. The sleeve 2 is a columnar structure with a hollow channel; the clamp body is located in the hollow channel of the sleeve 2, and comprises a clamp handle and a clamp head 1 arranged at the front end of the clamp handle for clamping the surgical target, and the clamp head 1 can extend out of the front end of the sleeve 2.

[0051] like Figure 3 and Figure 4 As shown, the material of the clamping body is titanium-nickel memory alloy or titanium-nickel alloy. Due to its material properties, the clamping body can be processed into an open or closed state. The handle 3 is connected to the rear end of the sleeve 2 to provide fixed support for the sleeve 2.

[0052] The sleeve 2 is a prismatic hollow metal tube; it can also be a cylindrical hollow metal tube; it can also be a hollow metal tube with one section being prismatic and the other being cylindrical, wherein the prismatic end is close to the clamp head 1. The diameter or width of the hollow channel of the sleeve 2 is 2 mm ± 0.1 mm, and can be applied to minimally invasive surgeries with high requirements on the size of minimally invasive wounds. It can also be processed into surgical clips of corresponding sizes based on this structural design and combined with design requirements.

[0053] like Figure 2 , Figure 5 and Figure 6 As shown, the operating unit is located on the handle 3, including a telescopic assembly for controlling the extension and retraction of the clamping body and an opening and closing assembly for controlling the opening and closing of the clamping body. The telescopic assembly includes a push plate 6 and a push block 7 connected to the push plate 6, the lower end of the push block 7 is connected to the tail of the clamp handle, the push plate 6 is pushed, the push plate 6 drives the push block 7 to move, and the push block 7 further drives the clamp handle to extend or retract, thereby controlling the clamping body to extend or retract into the sleeve 2.

[0054] like Figure 7As shown, the pliers head 1 includes a movable claw assembly and a fixed claw assembly, wherein the fixed claw assembly includes a fixed claw, and the movable claw assembly includes a movable claw. An arc-shaped bend is provided between the movable claw and the adjacent fixed claw to increase the clamping force. The opening and closing assembly includes a pull rope 5; one end of the pull rope 5 is provided on the handle 3, and the other end passes through the hollow channel of the sleeve 2 and is connected to the movable claw, so as to pull the movable claw head away from the fixed claw head. In this embodiment, the initial state of the movable claw can be set to closed (such as Figure 3 as shown) or open (as shown) Figure 4 If the structure is designed to be in a closed state, the pull rope 5 will stretch the movable claw outward; if it is designed to be in an open state, the pull rope 5 will stretch the movable claw inward to close it.

[0055] The opening and closing assembly includes a knob 8 arranged on the handle 3 and corresponding to the pull rope 5, and one end of the pull rope 5 is wound around the knob 8. A through hole is provided on the movable claw, and the other end of the pull rope 5 is fixed to the through hole on the movable claw. The pull rope 5 can be a single strand rope or a multi-strand rope, or can be selected accordingly according to actual conditions. The material of the pull rope 5 is generally selected from titanium-nickel alloy, and high-strength materials such as nylon or aramid fiber can also be selected.

[0056] Embodiment 2

[0057] like Figure 8 As shown, the difference from Example 1 is that the pliers head 1 of this embodiment includes a movable claw assembly and a fixed claw assembly, wherein the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw, and arc bends are respectively arranged between the fixed claw and the two movable claws.

[0058] The opening and closing assembly includes two pull ropes 5; one end of the pull rope 5 is connected to the knob 8, and the other end is connected to the two movable claws after passing through the hollow channel of the sleeve 2. The pull rope 5 pulls the heads of the two movable claws away from the fixed claw heads in opposite directions (i.e., toward both sides) synchronously or asynchronously. After clamping the surgical target, the pull rope 5 is released to close the movable claws.

[0059] Embodiment 3

[0060] like Fig. 9 As shown, the difference from Example 1 and Example 2 is that the pliers head 1 of this embodiment includes a movable claw assembly and a fixed claw assembly, wherein the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw, and arc bends are respectively arranged between the fixed claw and the two movable claws.

[0061] The opening and closing assembly includes two pull ropes 5; one end of the pull rope 5 is connected to the knob 8, and the other end is connected to the two movable claws after passing through the hollow channel of the sleeve 2, so as to pull the two movable claw heads away from the fixed claw heads in the same direction (upward or downward at the same time). After clamping the surgical target, the pull rope 5 is released to close the movable claws.

[0062] Embodiment 4

[0063] like Fig.10 As shown, the difference from Examples 1 to 3 is that the pliers head 1 of this embodiment includes a movable claw assembly and a fixed claw assembly, wherein the fixed claw assembly includes two fixed claws, the movable claw assembly includes a movable claw located between the two fixed claws, and arc bends are respectively arranged between the movable claw and the two fixed claws.

[0064] The opening and closing assembly includes a pull rope 5; one end of the pull rope 5 is connected to the knob 8, and the other end is connected to the movable claw after passing through the hollow channel of the sleeve 2. The pull rope 5 pulls the head of the movable claw away from the heads of the two fixed claws, so that the two sides of the movable claw are separated from the fixed claws respectively, and then the surgical target can be clamped vertically or horizontally at the same time, thereby improving the stability of clamping.

[0065] Embodiment 5

[0066] like Fig.11 As shown, the difference from the first to fourth embodiments is that the pliers head 1 of this embodiment includes two movable jaw assemblies, wherein each movable jaw assembly includes a movable jaw, and an arc bend is provided between the two movable jaws.

[0067] The opening and closing assembly includes two pull ropes 5, one end of the pull ropes 5 is connected to the knob 8, and the other end passes through the hollow channel of the sleeve 2 and is connected to the two movable claws. The pull ropes 5 pull the heads of the two movable claws apart, and the pull ropes 5 are released after clamping the surgical target, so that the two movable claws are close together and closed.

[0068] Embodiment 6

[0069] like Fig.12 As shown, the difference from the first to fifth embodiments is that the pliers head 1 of this embodiment includes two movable claw assemblies, one of which includes one movable claw, and the other includes two movable claws, and arc bends are respectively arranged between the three movable claws.

[0070] The opening and closing assembly includes three pull ropes 5, one end of which is connected to the knob 8, and the other end is connected to the three movable claws after passing through the hollow channel of the sleeve 2. The pull rope 5 pulls the heads of the three movable claws in two directions or three directions, that is, the movable claws on both sides are synchronously stretched upward, and the middle movable claw is stretched downward; or the middle movable claws on both sides are stretched upward, and the movable claws on both sides are stretched downward; or the three synchronous claws are directed to three different directions. After the surgical target is clamped, the pull rope 5 is released, and the three movable claws are closed.

[0071] The above embodiments are merely illustrative of the technical solutions of the present invention. Any changes and modifications made to the embodiments by those skilled in the art based on the concept of the present invention are deemed to fall within the protection scope of the present invention.

Claims

1. A minimally invasive surgical clip, characterized in that: It comprises a clamping body, a sleeve (2), a handle (3) and an operating unit (4); The sleeve (2) is a columnar structure with a hollow channel; the clamping body is located in the hollow channel of the sleeve (2), and comprises a clamp handle and a clamp head (1) arranged at the front end of the clamp handle for clamping the surgical object; the clamp head (1) can extend out of the front end of the sleeve (2); The handle (3) is connected to the rear end of the sleeve (2); The operating unit is located on the handle (3), and comprises a telescopic component for controlling the telescopic movement of the clamping body and an opening and closing component for controlling the opening and closing of the clamping body.

2. The minimally invasive surgical clip according to claim 1, characterized in that: The pliers head (1) comprises a movable claw assembly and a fixed claw assembly; The fixed claw assembly includes a fixed claw, and the movable claw assembly includes a movable claw; wherein the opening and closing assembly includes a pull rope (5); one end of the pull rope (5) is arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is connected to the movable claw, so as to pull the head of the movable claw away from the head of the fixed claw; Alternatively, the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw; wherein the opening and closing assembly includes two pull ropes (5); one end of the pull rope (5) is respectively arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is respectively connected to the two movable claws, so as to pull the two movable claw heads away from the fixed claw head in opposite directions; Alternatively, the fixed claw assembly includes a fixed claw, and the movable claw assembly includes two movable claws respectively located on both sides of the fixed claw; wherein the opening and closing assembly includes two pull ropes (5); one end of the pull rope (5) is respectively arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is respectively connected to the two movable claws, so as to pull the two movable claw heads away from the fixed claw head in the same direction; Alternatively, the fixed claw assembly includes two fixed claws, and the movable claw assembly includes a movable claw located between the two fixed claws; wherein the opening and closing assembly includes a pull rope (5); one end of the pull rope (5) is arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is connected to the movable claw, so as to pull the head of the movable claw away from the heads of the two fixed claws.

3. The minimally invasive surgical clip according to claim 1, characterized in that: The pliers head includes two movable claw assemblies; Each movable claw assembly comprises a movable claw; wherein the opening and closing assembly comprises two pull ropes (5), one end of the pull ropes (5) is respectively arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is respectively connected to the two movable claws, so as to pull the heads of the two movable claws apart; Alternatively, one movable claw assembly includes one movable claw, and the other movable claw assembly includes two movable claws; the opening and closing assembly includes three pull ropes (5), one end of the pull ropes (5) is respectively arranged on the handle (3), and the other end passes through the hollow channel of the sleeve (2) and is respectively connected to the three movable claws, so as to pull the heads of the three movable claws away in two directions or three directions.

4. The minimally invasive surgical clip according to claim 1, 2 or 3, characterized in that: The material of the clamping body is titanium-nickel memory alloy or titanium-nickel alloy.

5. The minimally invasive surgical clip according to claim 4, characterized in that: An arc-shaped bend is provided between the movable claw and the adjacent movable claw or fixed claw to increase the clamping force.

6. The minimally invasive surgical clip according to claim 5, characterized in that: The telescopic assembly comprises a push plate (6) and a push block (7) connected to the push plate (6), and the lower end of the push block (7) is connected to the tail of the clamp handle.

7. The minimally invasive surgical clip according to claim 6, characterized in that: The opening and closing assembly comprises at least one knob (8) arranged on the handle (3); one end of the pull rope (5) is wound around the corresponding knob (8); The movable claw is provided with a through hole, and the other end of the pull rope (5) is fixed on the through hole on the movable claw.

8. The minimally invasive surgical clip according to claim 7, characterized in that: The sleeve (2) is a prismatic hollow tube; Alternatively, the sleeve (2) is a cylindrical hollow tube; Alternatively, the sleeve (2) is a hollow tube, and a section close to the clamp head (1) is prismatic, and a section away from the clamp head (1) is cylindrical.

9. The minimally invasive surgical clip according to claim 8, characterized in that: The pull rope (5) is a single-strand rope or a multi-strand rope; The material of the pull rope (5) is titanium-nickel alloy or nylon or aramid fiber.

10. The minimally invasive surgical clip according to claim 9, characterized in that: The diameter or width of the hollow channel of the sleeve (2) is 2±0.1 mm.

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