A laparoscopic biliary biopsy sampler

Abstract

The present application relates to the technical field of medical devices, and discloses a gallbladder biopsy sampler under laparoscope, which comprises a blade, a handle connected with the blade, a placing piece connected with the handle, wherein the cross section of the placing piece is arcuate, a first placing groove and a second placing groove are symmetrically arranged at one end of the placing piece, a first clamping groove is arranged at the other end of the placing piece, a through groove is arranged on one side wall of the first placing groove, the handle is provided with a first connecting column connected with the blade, the handle is fixedly connected with a connecting piece, the connecting piece is rotationally connected with the placing piece, the connecting piece comprises a connecting ring and a second connecting column, an enclosing piece is arranged on the inner side wall of one end of the placing piece, the inner side wall of the placing piece and the inner side wall of the vertical part of the enclosing piece form a placing part, one end of the connecting ring is located in the placing part and rotationally connected with the placing part, the placing piece is provided with a fixing cover clamped with the first clamping groove, and the handle is provided with an abutting part which can abut against the inner surface of the fixing cover.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a laparoscopic bile duct biopsy sampler. Background Technology

[0002] A laparoscope is a medical device equipped with a miniature camera. Laparoscopic surgery is a procedure performed using a laparoscope and related instruments. Laparoscopic bile duct biopsy involves making multiple incisions in the patient's abdomen. One incision is used to insert the laparoscope into the abdomen, allowing medical staff to observe the internal condition. Another incision allows forceps to be used to cut the outer surface tissue of the bile duct, which is then extracted from the patient's body using instruments. The remaining incisions are used for other purposes.

[0003] During laparoscopic bile duct biopsy, a blade is held at one end of a forceps located inside the patient's abdomen. The surgeon controls the forceps and uses the blade to cut the outer surface tissue of the bile duct. However, in actual operation, because the surgeon indirectly manipulates the blade through the forceps, the position of the blade must be precisely controlled at all times. Otherwise, the blade may easily rupture the bile duct, causing bile to leak out. This presents problems of inconvenience and difficulty in control. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a laparoscopic bile duct biopsy sampler that can assist doctors in easily and accurately manipulating the blade and prevent the blade from cutting the bile duct.

[0005] The technical solution adopted in this invention is as follows: A laparoscopic bile duct biopsy sampling device includes a blade for cutting and placing surface tissue of the bile duct. The blade is connected to a handle for controlling the movement of the blade. The handle is connected to a placement component for placing the blade. The placement component has an arched cross-section. One end of the placement component is symmetrically provided with a first placement groove and a second placement groove for placing the blade, and the other end is provided with a first retaining groove. One side wall of the first placement groove is provided with through grooves opening outward and on both sides. The handle is provided with a first connecting post, which passes through the through groove and connects to the blade. The handle is fixedly connected to a connecting component. The connector and the placement component are rotatably connected. The connector includes a connecting ring and a plurality of circumferentially distributed second connecting posts. One end of each second connecting post is connected to the inner sidewall of the connecting ring, and the other end is connected to the outer surface of the handle. The inner sidewall of one end of the placement component is provided with a baffle with an L-shaped longitudinal section. The inner sidewall of the placement component and the inner sidewall of the vertical part of the baffle form a placement part. One end of the connecting ring is located inside the placement part and is rotatably connected to the placement part. The placement component is provided with a fixing cover that engages with a first slot. The handle is provided with an abutment part. One end of the handle passes through the fixing cover and is rotatably connected to the fixing cover. The abutment part can abut against the inner surface of the fixing cover.

[0006] The principle of the technical solution:

[0007] Before laparoscopic bile duct biopsy, the blade is completely inside the placement device, the fixing cap is engaged with the first slot, the abutment part abuts against the fixing cap, and the connecting ring abuts against the upper surface of the horizontal part of the enclosure. Due to the limitation of the handle by the fixing cap and the enclosure, the handle cannot move up and down at this time, but can only rotate. During laparoscopic bile duct biopsy, the patient's abdomen has multiple incisions. The placement device is inserted into the patient's abdomen through one incision, and the laparoscope is inserted into the patient's abdomen through another incision. The image inside the patient's abdomen is displayed on the monitor. While watching the monitor, the doctor places the placement device on the suspicious area on the outer surface of the bile duct, keeping the handle stationary. The cross-section of the placement device is... The arched placement device has a notch. At this time, the notch of the placement device is close to the suspicious area. Then, the doctor holds the handle with one hand and rotates the handle, while holding the end of the placement device outside the patient's body with the other hand and keeping the placement device stationary. The handle rotates relative to the placement device through the connector. Since the handle and the blade are connected through the first connecting post, the blade rotates through the first connecting post when the handle rotates. At the same time, the blade cuts the suspicious area and removes the tissue from the suspicious area. Continue to rotate the handle, and one end of the blade extends into the second placement groove to complete the cut. Then, keeping the handle and the placement device still, remove the placement device from the patient's abdomen to complete the bile duct biopsy sampling.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] 1. The handle of the present invention is rotatably connected by a connector and a placement component. The enclosure component, the first slot, the fixing cover, the connecting ring, and the abutment part work together to limit the handle, so that the handle can only rotate and the blade connected to the handle can only rotate. This makes it easy to accurately control the position of the blade through the handle. The handle, the first connecting post, and the blade work together. With just a slight turn of the handle, the blade will automatically follow the rotation of the handle through the first connecting post. The operation is convenient and can accurately, effectively, and easily complete bile duct biopsy sampling.

[0010] 2. The first and second placement slots of the present invention can accommodate the blade and prevent the blade tip from scratching the patient's abdominal cavity. The connecting ring and the placement part work together to enable the handle to rotate stably.

[0011] In a preferred embodiment of the present invention, the blade includes a first connecting portion, a cutting portion, a second connecting portion, and a third connecting portion. The cutting portion and the second connecting portion are located at both ends of the first connecting portion and are in the same direction. The cutting portion is located outside the first connecting portion. The third connecting portion is connected to one end of the cutting portion, the first connecting portion, and the second connecting portion. The first connecting portion, the cutting portion, the second connecting portion, and the third connecting portion together form a cavity for accommodating the surface tissue of the bile duct.

[0012] The beneficial effects of this solution are: the cavity formed by the first connecting part, the cutting part, the second connecting part and the third connecting part can accommodate the cut bile duct outer surface tissue, which is convenient for removing the cut bile duct outer surface tissue from the patient's body. The size and shape of the blade can be changed as needed, which facilitates precise cutting of the bile duct outer surface tissue.

[0013] In a preferred embodiment of the present invention, a magnetic third connecting post is provided between the inner sidewalls of the second placement groove, and a second slot is provided at one end of the cutting part and the second connecting part, which can be engaged with the third connecting post.

[0014] The beneficial effects of this design are as follows: The third connecting post works in conjunction with the second slot to fix the blade and the placement device in a relatively fixed position after cutting, so that the blade and the second placement slot can form a closed cavity, which can prevent the cut bile duct outer surface tissue from falling off the blade. Moreover, the third connecting post is magnetic, which can further enhance the connection strength between the second slot and the third connecting post. Because the blade is relatively fixed, the handle is also relatively stationary, which can indirectly limit the handle. When removing the placement device from the patient's abdomen, you only need to gently hold the handle, which is convenient to operate.

[0015] In a preferred embodiment of the present invention, the first connecting portion is in close contact with one end face of the placement component.

[0016] The beneficial effects of this solution are: it ensures that the first connecting part is close to one end face of the placement part, so that when the blade is cutting, there is no need to consider the space occupied by the placement part.

[0017] In a preferred embodiment of the present invention, the end of the handle that passes through the fixed cover is provided with anti-slip stripes.

[0018] The beneficial effects of this solution are: the anti-slip stripes ensure that doctors can accurately control the rotation of the handle, thereby accurately controlling the rotation of the blade and improving sampling efficiency.

[0019] In a preferred embodiment of the present invention, there are two first connecting posts, which are symmetrically arranged on the handle, and the handle is detachably connected to the first connecting posts.

[0020] The beneficial effects of this solution are: the first connecting post is symmetrically arranged on the handle, which can enhance the connection strength between the handle and the blade, increase the handle's control range over the blade, and the detachable connection makes it easy to replace the blade.

[0021] In a preferred embodiment of the present invention, the lower end face of the handle is located above the lower end face of the placement component.

[0022] The beneficial effects of this solution are: to prevent the lower end of the handle from poking into the patient's abdomen when the lower end of the placement device is inside the patient's abdomen, and to prevent the placement device from being inconvenient to place due to the handle being too long when the lower end of the placement device is inside the patient's abdomen, which in turn makes it inconvenient for the blade to cut.

[0023] In a preferred embodiment of the present invention, a plurality of the enclosure members are spaced apart along the axial direction of the handle, and a plurality of the connectors are spaced apart along the axial direction of the handle.

[0024] The beneficial effects of this solution are: multiple connectors can limit the part of the handle located inside the placement part, preventing the part of the handle located in the placement part from shaking; the working combination of the enclosure and connectors can make the handle rotate stably.

[0025] In a preferred embodiment of the present invention, a third slot is provided at both ends of the notch of the placement component, and an elastic piece is provided at the notch of the placement component that can be inserted into the third slot.

[0026] The beneficial effects of this solution are: the third slot and the elastic plate work together to ensure that when the device is inserted into the patient's abdomen, part of the enclosure and connecting parts are blocked, preventing them from contacting the tissues inside the patient's abdomen and thus protecting the tissues inside the patient's abdomen.

[0027] In a preferred embodiment of the present invention, the end of the placement member away from the blade is symmetrically provided with marking grooves, and the handle is fixedly connected with a marking rod. The marking rod includes a sphere and a rod body, and the outer surface of the sphere abuts against the outer surface of the placement member.

[0028] The beneficial effects of this solution are: the marking groove and marking rod work together to mark the current position of the blade, reminding the doctor of the blade's position and the arc of the handle rotation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the laparoscopic bile duct biopsy sampler of the present invention;

[0030] Figure 2 This is a partial structural diagram of the laparoscopic bile duct biopsy sampler of the present invention;

[0031] Figure 3 This is a partial structural diagram of the laparoscopic bile duct biopsy sampler of the present invention from another angle;

[0032] Figure 4 This is another partial structural diagram of the laparoscopic bile duct biopsy sampler of the present invention;

[0033] Figure 5 This is a partial structural diagram of the laparoscopic bile duct biopsy sampler of the present invention from another angle;

[0034] Figure 6 This is a schematic diagram of the laparoscopic bile duct biopsy sampler of the present invention from another angle;

[0035] Figure 7 This is a schematic diagram of the laparoscopic bile duct biopsy sampler of the present invention from another angle. Detailed Implementation

[0036] Typical embodiments embodying the features and advantages of the present invention will be specifically described in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0037] In the description of this application, the terms "first," "second," "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] The reference numerals in the attached drawings include: blade 1, handle 2, placement part 3, first placement groove 4, second placement groove 5, through groove 6, first connecting post 7, connector 8, connecting ring 9, second connecting post 10, enclosure part 11, fixing cover 12, abutment part 13, first connecting part 14, cutting part 15, second connecting part 16, third connecting part 17, third connecting post 18, second slot 19, anti-slip stripe 20, elastic sheet 21, marking groove 22, marking rod 23.

[0040] like Figures 1 to 7 As shown, a laparoscopic bile duct biopsy sampler includes a blade 1 for cutting and placing tissue on the surface of the bile duct, such as... Figure 3 As shown, the blade 1 includes a first connecting part 14, a cutting part 15, a second connecting part 16, and a third connecting part 17. The cutting part 15 and the second connecting part 16 are located at both ends of the first connecting part 14 and are in the same direction. The cutting part 15 is located outside the first connecting part 14. The third connecting part 17 is connected to one end of the cutting part 15, the first connecting part 14, and the second connecting part 16. The first connecting part 14, the cutting part 15, the second connecting part 16, and the third connecting part 17 form a cavity for accommodating the surface tissue of the bile duct. The cutting part 15 and the second connecting part 16 each have a second slot 19 at their front ends. In this embodiment, the front end of the cutting part 15 is sharp and used to cut the outer surface tissue of the bile duct. The front ends of the first connecting part 14 and the second connecting part 16 are sharp and can cut objects.

[0041] like Figure 3As shown, the blade 1 is connected to a handle 2 for controlling the movement of the blade 1. The handle 2 is fixedly connected to a connector 8, and multiple connectors 8 are spaced apart along the axial direction of the handle 2. In this embodiment, as shown... Figure 1 As shown, there are a total of four connectors 8, as follows: Figure 3 As shown, the connector 8 includes a connecting ring 9 and a plurality of circumferentially distributed second connecting posts 10. One end of each second connecting post 10 is connected to the inner wall of the connecting ring 9, and the other end is connected to the outer surface of the handle 2. The handle 2 is symmetrically provided with first connecting posts 7, and the handle 2 and the first connecting posts 7 are detachably connected. The first connecting posts 7 are connected to the blade 1. In this embodiment, the first connecting posts 7 are connected to the outer surface of the second connecting part 16, as shown. Figure 2 As shown, the end of the handle 2 furthest from the blade 1 is connected to an annular abutment portion 13, such as... Figure 1 As shown, the upper end of the handle 2 is connected to anti-slip stripes 20, and the end of the handle 2 away from the blade 1 is fixedly connected to a marking rod 23, which includes a ball and a rod.

[0042] like Figure 2 As shown, the handle 2 is connected to a placement member 3 for placing the blade 1. The placement member 3 has an arched cross-section. The lower end of the placement member 3 is symmetrically provided with a first placement groove 4 and a second placement groove 5 for placing the blade 1, and the upper end has a concave first slot, as shown. Figure 5 As shown, the first placement groove 4 has an outward-facing opening and two through grooves 6 on one side wall. The first connecting post 7 passes through the through groove 6 and connects to the second connecting part 16, as shown. Figure 3 As shown, a magnetic third connecting post 18 is provided between the inner sidewalls of the second placement groove 5. In this embodiment, the cutting part 15 and the second connecting part 16 can be attracted by a magnet, the second slot 19 can be engaged with the third connecting post 18, and the connecting member 8 is rotatably connected to the placement member 3. In this embodiment, as shown... Figure 4 As shown, the inner sidewall of the lower end of the placement component 3 is provided with a baffle 11 with an L-shaped longitudinal section. Multiple baffles 11 are spaced apart along the axial direction of the handle 2. In this embodiment, a total of four baffles 11 are provided. The inner sidewall of the placement component 3 and the inner sidewall of the vertical portion of the baffle 11 enclose the placement portion to form a placement part. One end of the connecting ring 9 on the connecting component 8 is located inside the placement portion and is rotatably connected to it. The placement component 3 is connected to a fixing cover 12 that can engage with the first slot. The upper end of the handle 2 passes through the fixing cover 12 and is rotatably connected to it. The abutment portion 13 can abut against the inner surface of the fixing cover 12. The lower end face of the handle 2 is located above the lower end face of the placement component 3. The first connecting portion 14 is tightly attached to the lower end face of the placement component 3. A third slot is provided at both ends of the notch in the placement component 3. Figure 6 and Figure 7 As shown, the notch of the placement part 3 is provided with an elastic piece 21 that can be inserted into the third slot, and the end of the placement part 3 away from the blade 1 is symmetrically marked with a marking groove 22, and the outer surface of the sphere abuts against the outer surface of the placement part 3.

[0043] Laparoscopic bile duct biopsy sampling procedure:

[0044] Before the bile duct biopsy, the blade 1 is completely placed in the first placement groove 4, the fixing cover 12 is engaged with the first slot, and then the fixing cover 12 is connected to the placement part 3. The lower end of the handle 2 abuts against the upper surface of the horizontal part of the enclosure part 11 through the connecting part 8, and the upper end abuts against the inner surface of the fixing cover 12 through the abutting part 13. Thus, the handle 2 is limited to rotate only and cannot move left or right. At this time, the marking rod 23 is opposite to the marking groove 22 on the right side of the upper end of the placement part 3, indicating that the blade 1 is completely placed in the first placement groove 4.

[0045] Next, the bile duct biopsy sampling begins. The laparoscope is inserted into the patient's abdomen through an incision on the upper part of the abdomen. The laparoscope displays the image of the patient's abdomen on the screen. While viewing the screen, the doctor inserts the lower end of the placement device 3 through another incision on the patient's abdomen. At this point, part of the placement device 3 is inside the patient's abdomen and part is outside the patient's body. The placement device 3 is then precisely placed on the suspicious area on the outer surface of the bile duct, and the notch of the placement device 3 is aligned with the suspicious area.

[0046] After fine-tuning the position of the placement piece 3, the doctor holds the end of the placement piece 3 outside the patient's body with one hand and the handle 2 with anti-slip stripes 20 with the other hand, and gently rotates the handle 2. When the handle 2 rotates, it drives the blade 1 to rotate through the first connecting post 7. At this time, when the handle 2 rotates, the connecting piece 8, which is fixedly connected to the handle 2, rotates within the placement part formed by the inner wall of the placement piece 3 and the inner wall of the vertical part of the enclosure piece 11. Therefore, the handle 2 can rotate stably, and the blade 1 can also rotate stably. While rotating, the blade 1 also cuts the suspicious area on the outer surface of the bile duct. Specifically, the cutting part 15 cuts the suspicious area on the outer surface of the bile duct, and the cut bile duct outer surface tissue falls into the cavity formed by the first connecting part 14, the cutting part 15, the second connecting part 16 and the third connecting part 17.

[0047] Continue rotating the handle 2 so that the blade 1 is partially located in the second placement groove 5. Specifically, the front end of the first connecting part 14 is located in the second placement groove 5, and the second slot 19 on the cutting part 15 and the second connecting part 16 is engaged with the third connecting post 18. Since the third connecting post 18 is magnetic, the cutting part 15 and the second connecting part 16 can be attracted by the magnet. The second slot 19 and the third connecting post 18 are stably connected, so that the position of the blade 1 is relatively fixed. At this time, the marking rod 23 is exactly opposite to the marking groove 22 on the other side. At this time, the blade 1 and the second placement groove 5 form a closed cavity, and the cut bile duct outer surface tissue is located in the closed cavity.

[0048] One hand holds the marker rod 23 and the placement piece 3 to keep them relatively still, which can prevent the handle 2 from rotating. Then, the placement piece 3 located in the patient's abdomen is slowly removed, thereby completing the bile duct biopsy sampling.

[0049] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A laparoscopic biliary biopsy sampler comprising a blade for cutting and placing tissue of a biliary surface, the blade being connected with a handle for manipulating the blade movement, characterized in that: The handle is connected with a placing part for placing the blade, the placing part is arched in cross section, the placing part is symmetrically provided with a first placing slot and a second placing slot at one end for placing the blade, and is provided with a first clamping slot at the other end, one side wall of the first placing slot is provided with an open outward and through both sides of the through slot, the handle is provided with a first connecting column, the first connecting column passes through the through slot and is connected with the blade, the handle is fixedly connected with a connecting part, the connecting part is rotationally connected with the placing part, the connecting part includes a connecting ring and a plurality of second connecting columns distributed in the circumferential direction, one end of each of the second connecting columns is connected with the inner side wall of the connecting ring, and the other end of each of the second connecting columns is connected with the outer surface of the handle, the inner side wall of the placing part at one end is provided with a surrounding part which is L-shaped in longitudinal section, the inner side wall of the placing part and the inner side wall of the vertical part of the surrounding part form a placing part, one end of the connecting ring is located in the placing part and is rotationally connected with the placing part, the placing part is provided with a fixed cover which is clamped with the first clamping slot, the handle is provided with an abutting part, one end of the handle passes through the fixed cover and is rotationally connected with the fixed cover, and the abutting part can abut against the inner surface of the fixed cover. The blade includes a first connecting part, a cutting part, a second connecting part and a third connecting part, the cutting part and the second connecting part are located at two ends of the first connecting part and are in the same direction, the cutting part is located outside the first connecting part, and the third connecting part is connected with one end of the cutting part, the first connecting part and the second connecting part respectively, and the first connecting part, the cutting part, the second connecting part and the third connecting part form a cavity for accommodating the surface tissue of the bile duct.

2. The laparoscopic bile duct biopsy sampler of claim 1, wherein: Third connecting columns with magnetism are arranged between the inner side walls of the second placing slot, and one end of each of the cutting part and the second connecting part is provided with a second clamping slot which can be clamped with the third connecting column.

3. The laparoscopic bile duct biopsy sampler of claim 1, wherein: The first connecting part is close to one end surface of the placing part.

4. The laparoscopic bile duct biopsy sampler of claim 1, wherein: One end of the handle which passes through the fixed cover is provided with anti-skid stripes.

5. The laparoscopic bile duct biopsy sampler of claim 1, wherein: The first connecting column has two parts which are symmetrically arranged on the handle, and the handle is detachably connected with the first connecting column.

6. The laparoscopic bile duct biopsy sampler of claim 1, wherein: The lower end surface of the handle is located above the lower end surface of the placing part.

7. The laparoscopic bile duct biopsy sampler of claim 1, wherein: A plurality of the connecting parts are arranged at intervals along the axial direction of the handle.

8. The laparoscopic bile duct biopsy sampler of claim 7, wherein: Third clamping slots are arranged at two ends of the notch of the placing part, and the notch of the placing part is provided with elastic sheets which can be clamped into the third clamping slots.

9. The laparoscopic bile duct biopsy sampler of claim 1, wherein: Symmetrically provided with mark slots at one end of the placing part away from the blade, the handle is fixedly connected with a marking rod, the marking rod includes a ball and a rod, and the outer surface of the ball abuts against the outer surface of the placing part.

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