Traction locking device for visceral organ suspension in minimally invasive surgery

Abstract

The invention provides a traction locking device for visceral organ suspension in minimally invasive surgery, which is mainly used for solving the technical problems that an operating forceps head of an existing traction device is easy to interfere with other operating instruments, the clamping force is difficult to guarantee, a puncture needle point is exposed to the outside, the human body is easy to be injured and the like. The device comprises a cannula assembly, a puncture assembly, a locking assembly and a suspension line, the sleeve assembly comprises a sleeve and a socket. The socket is of a hollow structure, one end of the sleeve is connected with the socket, and the sleeve is used for protecting the puncture needle; the puncture assembly comprises a handle and a puncture needle and is used for puncturing pathological tissues; the locking assembly comprises a locking rod and a lock catch and is used for locking and fixing the suspension line; all the components are matched with one another, traction and suspension of visceral organs at an affected part can be achieved, meanwhile, the clamping force of the suspension line in the traction and suspension process is guaranteed through the locking component, and therefore a surgeon can be effectively assisted in treatment.

Description

Technical Field

[0001] The present invention relates to a surgical organ suspension device, in particular to a traction and locking device for minimally invasive surgical organ suspension. Background Art

[0002] During laparoscopic surgery, a retractor is generally required to clamp, lift or suspend the patient's internal organs and tissues to ensure the smooth progress of the operation.

[0003] Currently, commonly used retractors typically utilize a puncture needle combined with a laparoscopic clamp. The needle is inserted into the affected area within the human body, and the laparoscopic clamp is used to grasp and lift the affected organ tissue. However, the clamp requires a surgical instrument channel (with a 3-5mm incision diameter). During single-port surgery, the clamp can easily interfere with other surgical instruments, and its grip is difficult to maintain. Overtightening or overloosening the clamp can affect the smooth progress of the procedure. Furthermore, the exposed tip of the puncture needle during suspending and retracting organs can easily cause harm. Summary of the Invention

[0004] The purpose of the present invention is to provide a traction and locking device for minimally invasive surgical organ suspension, which is mainly used to solve technical problems such as the surgical forceps of existing retractors easily interfering with other surgical instruments, the difficulty in ensuring the clamping force, and the exposed puncture needle tip easily causing harm to the human body.

[0005] In order to achieve the above objectives, the technical solutions of the present invention are as follows:

[0006] A traction and locking device for minimally invasive organ suspension, which is special in that:

[0007] It includes a cannula assembly, a puncture assembly, a locking assembly and a suspension wire;

[0008] The sleeve assembly includes a sleeve and a socket; the socket is a hollow structure, and one end of the sleeve is connected to the socket;

[0009] The puncture assembly includes a handle and a puncture needle;

[0010] The handle is provided with a first threading hole; the puncture needle is mounted on the handle and is in communication with the first threading hole to form a threading channel for passing the suspension wire; the puncture needle passes through the socket and is located in the cannula, and the length of the puncture needle is greater than the length of the cannula and less than the sum of the lengths of the cannula and the socket; the socket is plugged into the handle;

[0011] The handle is provided with a wire locking hole, the wire locking hole is communicated with the first wire threading hole, and the central axes of the two intersect vertically; the outer side of the wire locking hole is provided with a card slot;

[0012] The locking assembly includes a locking rod and a locking buckle; the size of the locking rod is adapted to the locking wire hole, and a second wire threading hole corresponding to the first wire threading hole is radially provided on the locking rod; one end of the locking buckle is hinged to the locking rod; the other end of the locking buckle can be clamped in the card slot.

[0013] Furthermore, the socket includes a plug board and a hollow plug post arranged in the middle of the plug board, the end of the hollow plug post close to the handle is a cylindrical plug post, and the end away from the handle is a special-shaped plug post; one end of the sleeve is connected to the end of the hollow plug post away from the handle;

[0014] The two sides of the cylindrical plug post protrude from the two side surfaces of the plug board respectively, and form two semi-cylindrical protrusions;

[0015] The two sides of the special-shaped plug post protrude from the two sides of the plug board respectively, forming a first arc-shaped protrusion and a second arc-shaped protrusion, and the radius of the first arc-shaped protrusion is larger than the radius of the second arc-shaped protrusion, and the radius of the first arc-shaped protrusion is also larger than the radius of the semi-cylindrical protrusion;

[0016] The end of the handle close to the socket is provided with a socket matching the socket, the plug plate and the hollow plug post are plugged into the socket, and the hollow plug post is coaxial with the first threading hole;

[0017] When the socket is plugged into the jack in the forward direction, the socket is in an embedded state; when the socket is plugged into the jack in the reverse direction, the socket is in a semi-embedded state.

[0018] Furthermore, the radius of the second arc-shaped protrusion is greater than the radius of the semi-cylindrical protrusion.

[0019] Furthermore, the lengths of the first arc-shaped protrusion and the second arc-shaped protrusion are equal; the length of the puncture needle is greater than the length of the cannula and less than the sum of the lengths of the cannula and the first arc-shaped protrusion.

[0020] Furthermore, there are two card slots, which are respectively located on both sides of the lock wire hole, and the other end of the lock buckle can be snapped into any card slot.

[0021] Furthermore, the wire locking hole is a threaded hole, the locking rod is a screw matching the threaded hole, and at the position where the second wire threading hole is set, there is an assembly gap between the external thread of the screw and the internal thread of the threaded hole to accommodate the suspension wire, and the assembly gap is 1.2 to 1.5 times the diameter of the suspension wire.

[0022] Furthermore, the second wire threading hole is an elongated hole to ensure that the suspension wire can be located at or close to the central axis of the first wire threading hole.

[0023] Furthermore, the puncture hole of the puncture needle head has a diameter less than or equal to 2 mm.

[0024] Furthermore, the suspension wire is made of titanium-nickel shape memory alloy.

[0025] Furthermore, the end of the handle away from the socket is provided with a wire entry groove coaxial with the first wire threading hole, and the size of the wire entry groove is larger than the size of the first wire threading hole, so that the suspension wire can be quickly inserted into the first wire threading hole.

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

[0027] 1. The traction and locking device for minimally invasive surgical organ suspension provided by the present invention includes a cannula assembly, a puncture assembly, a locking assembly and a suspension wire. The puncture assembly is used to puncture the diseased tissue, the cannula assembly is used to protect the puncture needle, and the locking assembly is used to lock and fix the suspension wire. The various components cooperate with each other to achieve traction and suspension of the diseased organ. At the same time, the locking assembly also ensures the clamping force of the suspension wire during the traction and suspension process, thereby effectively assisting the surgeon in treatment.

[0028] 2. The traction and locking device for minimally invasive organ suspension provided by the present invention is in a state of overall embedding when the socket and the jack are plugged into each other in the forward direction, thereby ensuring that the head of the puncture needle can be inserted into the cannula and puncture can be achieved; when the socket and the jack are plugged into each other in the reverse direction, the socket is in a semi-embedded state, thereby ensuring that the head of the puncture needle can be retracted into the cannula, thereby avoiding harm to the human body.

[0029] 3. The traction and locking device for minimally invasive organ suspension provided by the present invention has a locking wire hole that is a threaded hole, and a locking rod that is a screw that matches the threaded hole. In addition, at the position where the second wire threading hole is set, there is an assembly gap between the external thread of the screw and the internal thread of the threaded hole for accommodating the suspension wire. The assembly gap is 1.2 to 1.5 times the diameter of the suspension wire. At the same time, combined with the clamping connection between the lock buckle and the slot, rapid rotation locking of the suspension wire is achieved.

[0030] 4. The traction and locking device for minimally invasive organ suspension provided by the present invention has a puncture hole on the head of the puncture needle with a diameter less than or equal to 2 mm, thus achieving the requirement for a small wound size.

[0031] 5. The traction and locking device for minimally invasive organ suspension provided by the present invention uses a titanium-nickel memory alloy as the material for the suspension wire. This is because the titanium-nickel memory alloy is a high-performance biological material and is very safe to use in the human body, thereby improving the safety of the surgical process. At the same time, the material also has very good elasticity and is easy to shape and can be finalized according to design requirements, thereby increasing the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of an embodiment of a traction and locking device for suspending organs in minimally invasive surgery according to the present invention;

[0033] Figure 2 This is a structural schematic diagram of a sleeve assembly in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0034] Figure 3 for Figure 2 Right view of;

[0035] Figure 4 This is a side view of the handle facing the socket in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0036] Figure 5 This is a schematic diagram of a forward plugging state of a socket and a jack in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0037] Figure 6 This is a schematic diagram of the reverse connection state of the socket and the jack in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0038] Figure 7 This is a structural schematic diagram of a puncture assembly in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0039] Figure 8 This is a structural schematic diagram of a locking assembly in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0040] Figure 9 This is a reference diagram of the unlocked state of the locking assembly in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0041] Figure 10 This is a reference diagram of the locking state of the locking assembly in an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention;

[0042] Figure 11 This is a reference diagram of a locking state in which the locking assembly of an embodiment of a traction and locking device for minimally invasive organ suspension according to the present invention is rotated 180 degrees;

[0043] Figure 12 This is a reference diagram of the locking state of the lock buckle and the card slot in an embodiment of a traction and locking device for minimally invasive organ suspension of the present invention;

[0044] Figure 13 This is a reference diagram of the usage state of an embodiment of a traction and locking device for suspending organs in minimally invasive surgery according to the present invention.

[0045] The reference numerals are as follows:

[0046] 1-sleeve, 2-socket, 21-insertion board, 22-hollow plug, 221-first arc-shaped protrusion, 222-second arc-shaped protrusion, 3-handle, 31-first wire threading hole, 32-locking wire hole, 33-slot, 34-jack, 35-wire entry slot, 4-puncture needle, 5-suspension wire, 6-locking rod, 61-second wire threading hole, 7-locking buckle. DETAILED DESCRIPTION

[0047] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, this embodiment provides a traction and locking device for suspending organs in minimally invasive surgery, comprising a cannula assembly, a puncture assembly, a locking assembly and a suspension wire 5.

[0049] The sleeve assembly includes a sleeve 1 and a socket 2. The socket 2 is a hollow structure, consisting of an insert plate 21 and a hollow post 22 positioned in the middle of the insert plate 21. The hollow post 22 is cylindrical at the end closest to the handle 3 and shaped at the end away from the handle 3. One end of the sleeve 1 is connected to the end of the hollow post 22 away from the handle 3.

[0050] The cylindrical post protrudes from the sides of the insert plate 21, forming two semi-cylindrical protrusions. The irregularly shaped post protrudes from the sides of the insert plate 21, forming a first arcuate protrusion 221 and a second arcuate protrusion 222. The radius of the first arcuate protrusion 221 is greater than the radius of the second arcuate protrusion 222 (i.e., the irregularly shaped post appears asymmetrical). Furthermore, the radius of the first arcuate protrusion 221 is also greater than the radius of the semi-cylindrical protrusion. In practice, the radius of the second arcuate protrusion 222 can also be greater than the radius of the semi-cylindrical protrusion. The length H of the first arcuate protrusion 221 and the second arcuate protrusion 222 is equal, and is generally greater than the length of the puncture needle 4 that can extend beyond the other end of the cannula 1.

[0051] Combine Figure 1 and Figure 7 As shown, the puncture assembly includes a handle 3 and a puncture needle 4. The handle 3 is provided with a first threading hole 31; the puncture needle 4 is mounted on the handle 3 and communicates with the first threading hole 31 to form a threading channel for passing the suspension wire 5, which is made of titanium-nickel memory alloy.

[0052] Puncture needle 4 passes through socket 2 and is positioned within cannula 1. The length of puncture needle 4 is greater than that of cannula 1, but less than the combined length of cannula 1 and first arcuate protrusion 221. The puncture opening on the tip of puncture needle 4 has a diameter of less than or equal to 2 mm and is used to suspend and retract organs during single-port surgery, assisting the surgeon in completing the procedure while minimizing the incision.

[0053] The socket 2 is plugged into the handle 3. Specifically, a socket 34 matching the socket 2 is provided at one end of the handle 3 close to the socket 2, that is, the socket 34 is also an asymmetric socket. The plug plate 21 and the hollow plug post 22 are plugged into the socket 34, and the hollow plug post 22 is coaxial with the first threading hole 31.

[0054] like Figure 5 As shown, when the socket 2 is forwardly plugged into the socket 34 , the socket 2 is in an embedded state. At this time, the head of the puncture needle 4 is completely covered by the sleeve 1 .

[0055] like Figure 6 As shown, when the socket 2 and the jack 34 are plugged in reverse (i.e., the socket 2 is pulled out and rotated 180° along the central axis of the sleeve 1 before being plugged in), the socket 2 is in a semi-embedded state. At this time, the head portion of the puncture needle 4 is exposed from the sleeve 1. The switching between the two assembly states is mainly achieved by the limit fit between the socket 2 and the jack 34.

[0056] like Figure 7 As shown, the handle 3 is further provided with a locking hole 32, which is communicated with the first threading hole 31, and the central axes of the two intersect vertically. Two locking grooves 33 are respectively provided on the outer side of the locking hole 32.

[0057] The end of the handle 3 away from the socket 2 is provided with a wire entry groove 35 coaxial with the first wire hole 31 ( Figure 1 As shown), and the size of the wire entry groove 35 is larger than the size of the first wire threading hole 31, so that the suspension wire 5 can be quickly aligned with the first wire threading hole 31.

[0058] like Figure 8 As shown, the locking assembly includes a locking rod 6 and a locking buckle 7. The size of the locking rod 6 is adapted to the locking wire hole 32, and the locking rod 6 is radially provided with a second wire threading hole 61 corresponding to the first wire threading hole 31. The second wire threading hole 61 can be designed as an elongated hole to ensure that the suspension wire 5 can be located at or close to the central axis of the first wire threading hole 31. One end of the locking buckle 7 is hinged to the locking rod 6 via a hinge axis; the other end of the locking buckle 7 is used to rotate along the hinge axis and snap into any of the slots 33 to lock the suspension wire 5.

[0059] In this embodiment, the locking wire hole 32 is a threaded hole, and the locking rod 6 is a screw that matches the threaded hole. At the position where the second threading hole 61 is set, there is an assembly gap between the external thread of the screw and the internal thread of the threaded hole to accommodate the suspension wire 5. The assembly gap is 1.2 to 1.5 times the wire diameter of the suspension wire 5, so as to prevent the suspension wire 5 from being too loose and difficult to be locked, or being too tight and being pinched off.

[0060] Combine Figures 1 to 13 , the working principle of this embodiment is described in detail.

[0061] (1) Before use, install the locking rod 6 into the locking wire hole 32 so that the first wire hole 31 and the second wire hole 61 are parallel ( Figure 9 As shown), at this time, the lock buckle 7 is not buckled into the card slot 33, that is, the locking assembly is in an unlocked state.

[0062] (2) Assemble the cannula assembly and the puncture assembly, and insert the socket 2 into the socket 34 in the forward direction so that the plug plate 21 and the hollow plug column 22 are integrally embedded in the socket 34. At this time, the head of the puncture needle 4 extends out of the cannula 1 and is exposed to the outside.

[0063] (3) Push the handle 3 to drive the puncture needle 4 to puncture the target tissue. The suspension wire 5 is initially in a straight line. Insert the suspension wire 5 through the wire threading channel and release its suspension end from the head of the puncture needle 4.

[0064] (4) Suspend the target organ to the suspension end of the suspension line 5, and then rotate the lock buckle 7, thereby driving the lock rod 6 to rotate, and the second threading hole 61 will rotate synchronously ( Figure 10 As shown), an angle is generated between the central axis of the second threading hole 61 and the first threading hole 31; at the same time, the parts of the suspension wire 5 located at both ends of the second threading hole 61 are held by the second threading hole 61 and rotate synchronously, and enter the assembly gap between the locking rod 6 and the lock wire hole 32, and the two points A and B where the suspension wire 5 enters the assembly gap form a turning point ( Figure 11 As shown), these two folding points match the lock wire hole 32 and the notch on the lock rod; then press the lock buckle 7 ( Figure 12 As shown), and snapped into the card slot 33, thereby locking the suspension wire 5.

[0065] (5) Pull out the socket 2 from the jack 34 and insert it into the jack 34 in reverse. At this time, the socket 2 is in a semi-embedded state and the head of the puncture needle 4 is retracted into the sleeve 1 to prevent the puncture needle 4 from causing harm to the human body.

[0066] (6) Suspending and pulling the organ by means of the pulling and locking device ( Figure 13 ), assisting the surgeon to complete the operation.

[0067] The present invention's distraction and locking device not only facilitates organ suspension and distraction, but also allows for the release of the suspension line. Furthermore, the puncture needle tip can be concealed during organ suspension and distraction, thus preventing harm to the human body during use. The distraction and locking device is applicable to both single-port and multi-port minimally invasive surgeries.

[0068] Based on the above embodiments, ordinary technicians are sufficient to implement the present invention through the content of the present invention. Within the framework of the claims, any improvement based on the idea of ​​the present invention is deemed to fall within the scope of protection of the present invention.

Claims

1. A traction and locking device for organ suspension in minimally invasive surgery, characterized by: It includes a cannula assembly, a puncture assembly, a locking assembly and a suspension wire (5); The sleeve assembly comprises a sleeve (1) and a socket (2); the socket (2) is a hollow structure, and one end of the sleeve (1) is connected to the socket (2); The puncture assembly comprises a handle (3) and a puncture needle (4); The handle (3) is provided with a first threading hole (31); the puncture needle (4) is mounted on the handle (3) and is in communication with the first threading hole (31) to form a threading channel for passing the suspension wire (5); the puncture needle (4) passes through the socket (2) and is located in the cannula (1), and the length of the puncture needle (4) is greater than the length of the cannula (1) and less than the sum of the lengths of the cannula (1) and the socket (2); the socket (2) is plugged into the handle (3); The handle (3) is provided with a locking wire hole (32), which is communicated with the first wire threading hole (31), and the central axes of the two intersect vertically; a clamping groove (33) is provided on the outer side of the locking wire hole (32); The locking assembly comprises a locking rod (6) and a locking buckle (7); the size of the locking rod (6) is adapted to the locking wire hole (32), and a second wire threading hole (61) corresponding to the first wire threading hole (31) is radially provided on the locking rod (6); one end of the locking buckle (7) is hinged to the locking rod (6); and the other end of the locking buckle (7) can be snapped into the card slot (33).

2. The traction and locking device for minimally invasive organ suspension according to claim 1, characterized in that: The socket (2) comprises an inserting plate (21) and a hollow inserting column (22) arranged in the middle of the inserting plate (21); the end of the hollow inserting column (22) close to the handle (3) is a cylindrical inserting column, and the end away from the handle (3) is a special-shaped inserting column; one end of the sleeve (1) is connected to the end of the hollow inserting column (22) away from the handle (3); The two sides of the cylindrical plug post protrude from the two side surfaces of the plug plate (21) respectively, and form two semi-cylindrical protrusions; The two sides of the special-shaped plug post protrude from the two side surfaces of the plug board (21) respectively, forming a first arc-shaped protrusion (221) and a second arc-shaped protrusion (222), and the radius of the first arc-shaped protrusion (221) is greater than the radius of the second arc-shaped protrusion (222), and is also greater than the radius of the semi-cylindrical protrusion; The handle (3) is provided with a socket (34) matching the socket (2) at one end thereof close to the socket (2); the plug plate (21) and the hollow plug post (22) are plugged into the socket (34), and the hollow plug post (22) is coaxial with the first threading hole (31); When the socket (2) and the jack (34) are plugged in forward, the socket (2) is in an embedded state; when the socket (2) and the jack (34) are plugged in reverse, the socket (2) is in a semi-embedded state.

3. The traction and locking device for minimally invasive organ suspension according to claim 2, characterized in that: The radius of the second arc-shaped protrusion (222) is greater than the radius of the semi-cylindrical protrusion.

4. The traction and locking device for minimally invasive organ suspension according to claim 1, 2 or 3, characterized in that: The first arc-shaped protrusion (221) and the second arc-shaped protrusion (222) are equal in length; The length of the puncture needle (4) is greater than the length of the sleeve (1) and less than the sum of the lengths of the sleeve (1) and the first arc-shaped protrusion (221).

5. The traction and locking device for minimally invasive organ suspension according to claim 4, characterized in that: There are two locking slots (33), which are respectively located on both sides of the locking wire hole (32).

6. The traction and locking device for minimally invasive organ suspension according to claim 4, characterized in that: The locking wire hole (32) is a threaded hole, and the locking rod (6) is a screw rod that matches the threaded hole. At the position where the second threading hole (61) is set, there is an assembly gap between the external thread of the screw rod and the internal thread of the threaded hole to accommodate the suspension wire (5), and the assembly gap is 1.2 to 1.5 times the wire diameter of the suspension wire (5).

7. The traction and locking device for minimally invasive organ suspension according to claim 6, characterized in that: The second threading hole (61) is a long hole to ensure that the suspension wire (5) can be located at or close to the central axis position of the first threading hole (31).

8. The traction and locking device for minimally invasive organ suspension according to claim 1, characterized in that: The puncture opening on the head of the puncture needle (4) has a diameter less than or equal to 2 mm.

9. The traction and locking device for minimally invasive organ suspension according to claim 1, characterized in that: The suspension wire (5) is made of titanium-nickel memory alloy.

10. The traction and locking device for minimally invasive organ suspension according to claim 1, characterized in that: An end of the handle (3) away from the socket (2) is provided with a wire entry groove (35) coaxial with the first wire threading hole (31), and the size of the wire entry groove (35) is larger than the size of the first wire threading hole (31).

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