Traction locking device for visceral organ suspension in minimally invasive surgery

Abstract

The utility model 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, and a puncture needle point is exposed outside and is easy to hurt a human body 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 utility model 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 the treatment process of laparoscopic minimally invasive surgery, a retractor is generally required to clamp and lift or suspend the patient's organ tissue to ensure the smooth progress of the operation.

[0003] At present, the commonly used retractors generally use a puncture needle in combination with a laparoscopic surgical clamp. The puncture needle is used to enter the patient's body, and the laparoscopic surgical clamp is used to clamp and lift the organ tissue of the patient's body. However, the surgical clamp needs to occupy a surgical instrument channel (the diameter of the channel wound is 3-5mm). In single-port surgery, the surgical clamp is easy to interfere with other surgical instruments, and the clamping force is difficult to ensure. Too tight or too loose will affect the smooth progress of the operation. In addition, when suspending and retracting organs, the puncture needle tip is exposed to the outside, which is also easy to cause harm to the human body. Utility Model Content

[0004] The utility model aims to provide a traction and locking device for minimally invasive surgical organ suspension, which is mainly used to solve the technical problems that the surgical forceps of the existing retractor are easy to interfere with other surgical instruments, the clamping force is difficult to ensure, and the puncture needle tip is exposed to the outside and is easy to cause harm to the human body.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A traction and locking device for organ suspension in minimally invasive surgery, 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 comprises 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 comprises a handle and a puncture needle;

[0010] The handle is provided with a first threading hole; the puncture needle is installed on the handle and is connected 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 sleeve, and the length of the puncture needle is greater than the length of the sleeve and less than the sum of the lengths of the sleeve 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 threading hole corresponding to the first 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 snapped into the slot.

[0013] Furthermore, the socket comprises 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 plate respectively, and form two semi-cylindrical protrusions;

[0015] The two sides of the special-shaped plug column 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 greater than the radius of the second arc-shaped protrusion, and the radius of the first arc-shaped protrusion is also greater 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 sleeve and less than the sum of the lengths of the sleeve 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 threading hole is a long hole to ensure that the suspension wire can be located at or close to the central axis position of the first threading hole.

[0023] Furthermore, the caliber of the puncture opening of the puncture needle head is less than or equal to 2 mm.

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

[0025] Furthermore, a wire entry groove coaxial with the first wire threading hole is provided at one end of the handle away from the socket, 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 utility model has the following beneficial effects:

[0027] 1. The utility model provides a traction and locking device for suspending organs in minimally invasive surgery, which includes a sleeve assembly, a puncture assembly, a locking assembly and a suspension line. The puncture assembly is used to puncture the diseased tissue, the sleeve assembly is used to protect the puncture needle, and the locking assembly is used to lock and fix the suspension line. The components cooperate with each other to achieve traction and suspension of the patient's organs. At the same time, the locking assembly also ensures the clamping force of the suspension line during the traction and suspension process, thereby effectively assisting the operator in treatment.

[0028] 2. The traction and locking device for organ suspension in minimally invasive surgery provided by the utility model is in a state of overall embedding when the socket and the jack are forwardly plugged in, thereby ensuring that the head of the puncture needle can be inserted into the sleeve and puncture is achieved; when the socket and the jack are reversely plugged in, the socket is in a semi-embedded state, thereby ensuring that the head of the puncture needle is retracted into the sleeve, thereby avoiding harm to the human body.

[0029] 3. The utility model provides a traction and locking device for minimally invasive surgical organ suspension, wherein the locking wire hole is a threaded hole, and the locking rod is a screw matching the threaded hole. In addition, at the position where the second 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, and 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 suspension of organs in minimally invasive surgery provided by the utility model has a puncture hole at the head of the puncture needle with a diameter less than or equal to 2 mm, thus achieving the requirement for a small size of the wound.

[0031] 5. The traction and locking device for minimally invasive organ suspension provided by the utility model uses a titanium-nickel memory alloy as the material for the suspension wire. 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 process and can be shaped 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 suspension of organs in minimally invasive surgery according to the utility model;

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

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

[0035] Figure 4 It is a side view of the handle facing the socket in an embodiment of a traction and locking device for suspension of organs in minimally invasive surgery of the utility model;

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

[0037] Figure 6 This is a schematic diagram of the reverse plugging state of the socket and the jack in an embodiment of a traction and locking device for minimally invasive organ suspension of the utility model;

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

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

[0040] Fig. 9 This is a reference diagram of the unlocked state of the locking assembly in the embodiment of the traction and locking device for minimally invasive organ suspension of the utility model;

[0041] Fig.10 This is a reference diagram of the locking state of the locking assembly in the embodiment of the traction and locking device for minimally invasive organ suspension of the utility model;

[0042] Fig.11 This is a reference diagram of a locking state in which a locking assembly is rotated 180 degrees in an embodiment of a traction and locking device for suspension of organs in minimally invasive surgery of the utility model;

[0043] Fig.12 This is a reference diagram of the locking state of the lock buckle and the card slot in the embodiment of the traction and locking device for minimally invasive organ suspension of the utility model;

[0044] Fig.13 This is a reference diagram of the use status of an embodiment of a traction and locking device for minimally invasive organ suspension of the utility model.

[0045] The reference numerals are as follows:

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

[0047] The present invention is described in detail below in conjunction with 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, including 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, including an insert plate 21 and a hollow plug post 22 arranged in the middle of the insert plate 21. The end of the hollow plug post 22 close to the handle 3 is a cylindrical plug post, and the end away from the handle 3 is a special-shaped plug post. One end of the sleeve 1 is connected to the end of the hollow plug post 22 away from the handle 3.

[0050] The two sides of the cylindrical plug post protrude from the two sides of the plug plate 21, respectively, forming two semi-cylindrical protrusions; the two sides of the special-shaped plug post protrude from the two sides of the plug plate 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 (that is, the appearance of the special-shaped plug post is an asymmetric plug post), and at the same time, the radius of the first arc-shaped protrusion 221 is also greater than the radius of the semi-cylindrical protrusion. In practice, the radius of the second arc-shaped protrusion 222 can also be greater than the radius of the semi-cylindrical protrusion. The length H of the first arc-shaped protrusion 221 and the second arc-shaped protrusion 222 is equal, and generally the length H is greater than the length of the head of the puncture needle 4 that can extend out of the other end of the sleeve 1.

[0051] Combination 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] The puncture needle 4 passes through the socket 2 and is located in the sleeve 1, and 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. The puncture hole on the head of the puncture needle 4 has a diameter less than or equal to 2 mm, and is used to suspend and retract organs in single-port surgery, assist the surgeon to complete the surgery, and the instrument incision is small.

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

[0054] like Figure 5 As shown, when the socket 2 is positively plugged into the socket 34 , the socket 2 is in an embedded state, and 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 is reversely plugged into the jack 34 (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 wire locking hole 32, which is communicated with the first wire threading hole 31, and the central axes of the two intersect vertically. Two clamping grooves 33 are respectively provided on the outer side of the wire 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 threading 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 a second threading hole 61 corresponding to the first threading hole 31 is radially provided on the locking rod 6, and the second threading hole 61 can be designed as a long hole, so as to ensure that the suspension wire 5 can be located at or close to the central axis position of the first threading hole 31. One end of the locking buckle 7 is hinged to the locking rod 6 through a hinge axis; the other end of the locking buckle 7 is used to rotate along the hinge axis and be clamped in any clamping slot 33 to achieve the locking of the suspension wire 5.

[0059] In this embodiment, the locking wire hole 32 is a threaded hole, the locking rod 6 is a screw matching the threaded hole, and 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 clamped off.

[0060] Combination 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 threading hole 31 and the second wire threading hole 61 are parallel ( Fig. 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 sleeve 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 sleeve 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 threading channel and release its suspension end from the head of the puncture needle 4.

[0064] (4) The target organ is suspended at the suspension end of the suspension wire 5, and then the lock buckle 7 is rotated, thereby driving the lock rod 6 to rotate, and the second threading hole 61 rotates synchronously ( Fig.10 As shown), an angle is formed 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 locking wire hole 32, and the two points A and B where the suspension wire 5 enters the assembly gap form a folding point ( Fig.11 As shown), the two folding points match the lock wire hole 32 and the notch on the lock rod; then press the lock buckle 7 ( Fig.12 As shown), and snaps into the snap slot 33, thereby locking the suspension wire 5.

[0065] (5) Pull the socket 2 out of the insertion hole 34 and insert it into the insertion hole 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 ( Fig.13 ), assisting the surgeon to complete the operation.

[0067] The traction and locking device of the utility model can not only cooperate to realize the suspension and traction of organs, but also realize the release of the suspension line. When suspending and traction of organs, the puncture needle tip can be hidden, thereby avoiding harm to the human body during use. The traction and locking device is applicable to both single-hole and multi-hole minimally invasive surgeries.

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

Claims

1. A traction and locking device for organ suspension in minimally invasive surgery, characterized in that: It comprises 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 wire locking hole (32), the wire locking hole (32) is communicated with the first wire threading hole (31), and the central axes of the two intersect vertically; the outer side of the wire locking hole (32) is provided with a clamping groove (33); 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 snap groove (33).

2. The traction and locking device for suspension of organs in minimally invasive surgery according to claim 1, characterized in that: The socket (2) comprises a plug board (21) and a hollow plug post (22) arranged in the middle of the plug board (21); the end of the hollow plug post (22) close to the handle (3) is a cylindrical plug post, and the end away from the handle (3) is a special-shaped plug post; one end of the sleeve (1) is connected to the end of the hollow plug post (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 column protrude from the two side surfaces of the plug plate (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 plug hole (34) are plugged in forward direction, the socket (2) is in an embedded state; when the socket (2) and the plug hole (34) are plugged in reverse direction, the socket (2) is in a semi-embedded state.

3. The traction and locking device for suspension of organs in minimally invasive surgery 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 suspension of organs in minimally invasive surgery according to claim 2 or 3, characterized in that: The first arc-shaped protrusion (221) and the second arc-shaped protrusion (222) are of equal 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 suspension of organs in minimally invasive surgery according to claim 4, characterized in that: There are two clamping slots (33), which are respectively located on both sides of the locking wire hole (32).

6. The traction and locking device for suspension of organs in minimally invasive surgery according to claim 4, characterized in that: The locking wire hole (32) is a threaded hole, the locking rod (6) is a screw rod matching the threaded hole, and 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 suspension of organs in minimally invasive surgery 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 suspension of organs in minimally invasive surgery according to claim 1, characterized in that: The caliber of the puncture opening on the head of the puncture needle (4) is less than or equal to 2 mm.

9. The traction and locking device for suspension of organs in minimally invasive surgery 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 suspension of organs in minimally invasive surgery 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).

Images