CN115137412A - Biopsy forceps for visual endoscope - Google Patents

Abstract

The invention discloses a biopsy forceps for a visual endoscope, which comprises an outer sheath tube, a biopsy forceps body and a lens component body, wherein at least one hollow cavity channel is formed in the inner part of the outer sheath tube in a penetrating manner along the axial direction; the biopsy forceps body comprises a biopsy forceps head, a first insertion part and an operation part, wherein the biopsy forceps head and the operation part are respectively connected to two ends of the first insertion part; the lens component body comprises a handheld part, a second insertion part and a miniature camera probe which are sequentially connected, and the miniature camera probe and the second insertion part can be movably inserted into the hollow cavity. The direct-view detection instrument can reach the bronchus with the diameter smaller than 4mm, is close to the periphery of the lung, and can perform direct-view detection on the focus in the tube cavity, and the sampling process has direct-view property and pertinence.

Description

Biopsy forceps for visual endoscope

technical field

The invention relates to the technical field of medical instruments, in particular to a biopsy forceps for a visual endoscope.

Background technique

With the widespread use of endoscopic technology, doctors began to use endoscopes to sample biopsies of the digestive tract and respiratory tract to provide direct evidence for disease diagnosis. Biopsy forceps is a simple device for diagnosing and treating diseases by grasping the mucosa or tissue on the inner surface of the lumen. In the field of respiratory intervention, due to the improvement of technology and the reduction of raw material costs, biopsy forceps are mostly disposable, ready-to-use, disposable, and used after ethylene oxide sterilization, and are widely used in clinical endoscopic diagnosis and treatment operations. in the process.

The current structure of the biopsy forceps is shown in Figure 1, including the outer sleeve 3' (1.5-2mm in diameter), the biopsy forceps head 4' (1.3mm-6mm), the guide wire 2' (100mm) and the attached bracelet 1' Etc., the working principle is: under the action of the guide wire 2', one end of the biopsy forceps head 4' is inserted into the human body through the insertion part of the bronchoscope, and when it reaches the lesion, the hand ring 1' controls the opening and closing of the biopsy forceps head 4' Appropriate amount of tissue samples were taken with forceps for subsequent pathological studies. However, during routine bronchoscopy, the outer diameter of an ordinary bronchoscope for adults is 4 mm, and the farthest reach is the opening of the segmental bronchus. Therefore, the scope of direct vision of the existing bronchoscope is limited to the segmental bronchus, and the sub-segmental to sub-segmental bronchus. Intraluminal lesions of subsegmental bronchi (bronchial diameter between 2-4mm), such as new organisms, ulcers and even small foreign bodies, cannot be directly visualized, so the existing biopsy forceps cannot be directly visualized when sampling in the subsegmental bronchi. Depending on the detection method, it is impossible to clearly determine whether there is a lesion at the position where the biopsy forceps head reaches, and there is blindness in the sampling process, which reduces the accuracy of the detection effect.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems in the background art, the present invention provides a biopsy forceps for visualization endoscope, which can reach the bronchus with a diameter of less than 4 mm, close to the peripheral part of the lung, and perform direct vision detection on the lesions in the lumen, The sampling process is more direct and targeted.

In order to achieve the above object, the present invention adopts the following technical solutions:

The present invention provides a biopsy forceps for a visual endoscope, comprising an outer sheath tube, a biopsy forceps body and a lens assembly body. Both the body and the lens assembly body can be movably passed through and installed in the hollow cavity;

The biopsy forceps body comprises a biopsy forceps head, a first insertion part and an operation part, the two ends of the first insertion part are respectively connected with the biopsy forceps head and the operation part, the biopsy forceps head and the first insertion part can be movably inserted into the hollow cavity, the operating portion is located outside the hollow cavity, and the biopsy forceps head is controlled to open and close for sampling through the operating portion;

The lens assembly body includes a hand-held part, a second insertion part and a miniature camera probe connected in sequence, and the miniature camera probe and the second insertion part can be movably inserted into the hollow cavity.

A further improvement is that the first insertion part includes a guide wire and a metal control wire, one end of the guide wire is coaxially connected with a pliers head seat, and a telescopic frame is slidably arranged on the inner wall of the pliers head seat, and the telescopic frame is The top is connected with the biopsy forceps head, the end of the biopsy forceps head is rotatably connected to the forceps head seat, the inside of the guide wire is a hollow structure, and the metal control wire is slidably passed through the inside of the guide wire. In the hollow part, one end of the metal control wire passes through the end of the guide wire and is connected to the bottom of the telescopic frame, and the other end of the metal control wire passes through the other end of the guide wire and is connected to the operation part. connect. The metal control wire can be made of stainless steel. When in use, by setting the metal control wire, the guide wire with flexible structure can be pushed and guided, so that the guide wire can drive the biopsy forceps head to move more directionally in the hollow cavity inside the outer sheath tube. , through the operation part to control the metal control wire to move in the hollow part inside the guide wire, so as to drive the bottom of the telescopic frame to slide up and down inside the forceps head seat, and then the biopsy forceps head can be controlled to open and close, and the tissue at a specific part can be clamped.

A further improvement is that the biopsy forceps head includes a first forceps head body and a second forceps head body, the clamping space on the upper part of the first forceps head body and the clamping space on the upper part of the second forceps head body are oppositely arranged, and Can be combined to form a clamping space for clamping the tissue at the lesion, the first forceps head body and the lower part of the second forceps head body are both rotatably connected to the forceps head seat, and the first forceps head body and the bottom of the second forceps head body are respectively connected with the top of the telescopic frame. The metal control wire is simultaneously connected to the first and second pliers head bodies through the telescopic frame, so that the first pliers head body and the second pliers head body can be controlled to rotate relative to the pliers head seat through the operation part, so as to realize the first The forceps head body and the second forceps head body are opened and closed for sampling.

A further improvement is that the operating part includes a handle, a slip ring catheter and a slip ring, the guide wire is coaxially provided with the slip ring catheter at one end away from the biopsy forceps head, and the slip ring catheter is slidably sleeved on the outside of the guide wire. The slip ring is connected with the end of the metal control wire, and the handle is provided at one end of the slip ring conduit away from the guide wire. When in use, the slip ring is manually controlled to move along the outside of the slip ring catheter, so that the metal control wire can be driven to move in the hollow part inside the guide wire, so as to control the opening and closing of the biopsy forceps head for sampling.

A further improvement is that the guide wire is a helical structure twisted from stainless steel wire.

A further improvement is that the outer diameter of the outer sheath tube is 2-4 mm.

A further improvement is that the model of the miniature camera probe is OmniVision OV6948. Its size is only 0.65*0.65*1.158 mm, it occupies a small volume, can transmit images quickly and clearly, and its low energy consumption makes the body not generate a lot of heat, so it can last longer during surgery, And it has a wide angle of 120 degrees, which can be better used to inspect narrow environments.

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

In the present invention, a single-lumen biopsy forceps or a multi-lumen biopsy forceps can be formed by cooperating the biopsy forceps body and the lens assembly body with the hollow cavity inside the outer sheath, wherein the single-lumen biopsy forceps can enter the bronchus with a diameter of about 2 mm, The outer diameter of the multi-chamber biopsy forceps can also be controlled within 4mm. The image information collected by the lens assembly body can directly detect the lesions in the bronchial lumen, and then the biopsy forceps body can be used to clamp the lesion tissue. The whole sampling process is direct, more objective and intuitive.

Description of drawings

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of biopsy forceps in the prior art;

Fig. 2 is the structural representation of outer sheath tube in embodiment 1;

3 is a schematic structural diagram of a biopsy forceps body in Example 1;

4 is a schematic structural diagram of the biopsy forceps head and the telescopic frame being connected in Embodiment 1;

5 is a schematic structural diagram of a lens assembly body in Embodiment 1;

Fig. 6 is the structural representation of outer sheath tube in embodiment 2;

Among them, the specific reference signs are: bracelet 1', guide wire 2', outer sleeve 3', biopsy forceps head 4', outer sheath tube 1, hollow lumen 2, biopsy forceps body 3, biopsy forceps head 4, No. A forceps head body 5, a second forceps head body 6, a telescopic frame 7, a forceps head seat 8, a first insertion portion 9, a guide wire 10, a metal control wire 11, an operating portion 12, a handle 13, a slip ring conduit 14, a slide Ring 15 , lens assembly body 16 , hand-held portion 17 , second insertion portion 18 , miniature camera probe 19 .

Detailed ways

Example 1

Embodiment 1 of the present invention discloses a biopsy forceps for a visual endoscope, as shown in FIG. 2 to FIG. 5 , including an outer sheath tube 1 , a biopsy forceps body 3 and a lens assembly body 16 . In this embodiment, the outer sheath tube 1 The outer diameter of the outer sheath tube 1 is 2mm, and a hollow lumen 2 runs through the outer sheath tube 1 in the axial direction. The biopsy forceps body 3 and the lens assembly body 16 can be movably installed in the hollow lumen 2; 3. It includes a biopsy forceps head 4, a first insertion portion 9 and an operation portion 12. Both ends of the first insertion portion 9 are respectively connected with a biopsy forceps head 4 and an operation portion 12. The biopsy forceps head 4 and the first insertion portion 9 can be movably inserted into the Inside the hollow cavity 2, the operation part 12 is located outside the hollow cavity 2, and the biopsy forceps head 4 is controlled to open and close for sampling through the operation part 12; the lens assembly body 16 includes a hand-held part 17, a second insertion part 18 and a miniature camera probe connected in sequence. 19. The miniature camera probe 19 and the second insertion part 18 can be movably inserted into the hollow cavity 2. In this embodiment, the biopsy forceps for visualization endoscope is a single-lumen biopsy forceps, which can enter the bronchus with a diameter of about 2 mm. First, the lens assembly body 16 is movably installed in the hollow cavity 2 inside the outer sheath tube 1, and the bronchial tube is movably installed. The lesions in the cavity are detected by direct vision. After the target lesions are found, the lens assembly body 16 is withdrawn from the hollow cavity 2 inside the outer sheath tube 1, and then the biopsy forceps body 3 is movably extended into the inner hollow cavity of the outer sheath tube 1. Lane 2, after reaching the target lesion, the biopsy forceps head 4 is used to clamp the tissue at the lesion.

The first insertion portion 9 includes a guide wire 10 and a metal control wire 11. One end of the guide wire 10 is coaxially connected to a pliers head seat 8. A telescopic frame 7 is slidably arranged on the inner wall of the pliers head seat 8, and the top of the telescopic frame 7 is connected with a Biopsy forceps head 4, the end of biopsy forceps head 4 is rotatably connected to the forceps head seat 8, the inside of the guide wire 10 is a hollow structure, the metal control wire 11 slides through the hollow part inside the guide wire 10, and one end of the metal control wire 11 passes through. The end of the guide wire 10 goes out and is connected to the bottom of the telescopic frame 7 , and the other end of the metal control wire 11 passes through the other end of the guide wire 10 and is connected to the operation part 12 . The metal control wire 11 can be selected from a stainless steel tube. When in use, by setting the metal control wire 11 , the guide wire 10 with a flexible structure can be pushed and guided, so that the guide wire 10 can drive the biopsy forceps head 4 more easily inside the outer sheath tube 1 The directional movement in the hollow lumen 2 of the guide wire 12 controls the movement of the metal control wire 11 in the hollow part inside the guide wire 10 through the operation part 12, thereby driving the bottom of the telescopic frame 7 to slide up and down inside the forceps head seat 8, and then the biopsy forceps head 4 can be controlled. Open and close to clamp tissue at a specific site.

The biopsy forceps head 4 includes a first forceps head body 5 and a second forceps head body 6, and the clamping space on the upper part of the first forceps head body 5 and the clamping space at the upper part of the second forceps head body 6 are arranged opposite to each other, and can be combined A clamping space for clamping the tissue at the lesion is formed, the lower parts of the first forceps head body 5 and the second forceps head body 6 are both rotatably connected to the forceps head seat 8, and the first forceps head body 5 and the second forceps head body 5 The bottoms of 6 are respectively connected with the tops of the telescopic frames 7 . The metal control wire 11 is simultaneously connected to the first pliers head body 5 and the second pliers head body 6 through the telescopic frame 7, so that the first pliers head body 5 and the second pliers head body 6 can be controlled relative to the pliers head through the operation part 12 The seat 8 is rotated, thereby realizing the opening and closing of the first forceps head body 5 and the second forceps head body 6 for sampling.

The operating portion 12 includes a handle 13, a slip ring catheter 14 and a slip ring 15, a slip ring catheter 14 is coaxially provided at one end of the guide wire 10 away from the biopsy forceps head 4, and a slip ring 15 is slidably sleeved on the outside of the slip ring catheter 14, and The slip ring 15 is connected to the end of the metal control wire 11 , and a handle 13 is provided at one end of the slip ring catheter 14 away from the guide wire 10 . When in use, manually control the slip ring 15 to move along the outside of the slip ring catheter 14, thereby driving the metal control wire 11 to move in the hollow part of the guide wire 10, thereby controlling the opening and closing of the biopsy forceps head 4 for sampling. The operating handle can also adopt other existing structural forms for biopsy forceps.

Wherein, the guide wire 10 and the second insertion portion 18 are both spiral-shaped structures twisted from stainless steel wires.

Among them, the model of the miniature camera probe 19 is OmniVision OV6948. Its size is only 0.65*0.65*1.158 mm, it occupies a small volume, can transmit images quickly and clearly, and its low energy consumption makes the body not generate a lot of heat, so it can last longer during surgery, And it has a wide angle of 120 degrees, which can be better used to inspect narrow environments.

During operation, the second insertion part 18 and the miniature camera probe 19 are controlled by the hand-held part 17 to be movably inserted into the hollow cavity 2 inside the outer sheath tube 1 until the miniature camera probe 19 is flush with the head end of the outer sheath tube 1, and the control The outer sheath tube 1, the second insertion part 18 and the miniature camera probe 19 are inserted into the insertion part of the bronchoscope together. When it is necessary to enter the bronchus with a diameter of less than about 4 mm, the bronchoscope stops moving and continues to control the outer sheath tube 1 and the first through the hand-held part. The second insertion part 18 and the micro-camera probe 19 move inward together, and the image information collected by the micro-camera probe 19 realizes direct vision detection of the bronchial lumen. After finding the target lesion, the second insertion part 18 and the micro-camera probe 19 Take it out from the inside of the outer sheath tube 1, and then extend the first insertion part 9 with the biopsy forceps head 4 installed along the hollow lumen 2 inside the outer sheath tube 1, and control the depth of its insertion, so as to reach the target lesion , and then the tissue at the lesion is clamped by the biopsy forceps head 4, so that the whole sampling process has direct visibility, which is more objective and intuitive.

Example 2

Embodiment 2 of the present invention discloses a biopsy forceps for a visual endoscope. The basic features of Embodiment 2 and Embodiment 1 are the same, and the two have the following different technical features: 1. There are two hollow cavities 2 running through the interior in the axial direction to form a dual-lumen biopsy forceps. The biopsy forceps body 3 and the lens assembly body 16 are respectively movably installed in the corresponding hollow cavities 2 inside the outer sheath tube 1. The outer diameter of the tube 1 can be controlled at about 3mm.

When working, the outer sheath tube 1 is movably inserted into the insertion part of the bronchoscope, and the outer sheath tube 1 is controlled to continue to penetrate into the bronchus with a diameter of less than 4 mm, and the bronchial lumen is directly inspected through the image information collected by the miniature camera probe 19. , after the target lesion is found, the tissue at the lesion is directly clamped through the biopsy forceps head 4 under visual conditions.

The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention, and are not intended to limit the present invention. For those skilled in the art to which the present invention pertains, according to the idea of the present invention, several simple deductions, modifications or substitutions can also be made.

Claims (7)

1. a biopsy forceps for visualization endoscope, is characterized in that, comprises outer sheath tube, biopsy forceps body and lens assembly body, and described outer sheath tube is provided with at least one hollow lumen along the axial direction inside, so Both the biopsy forceps body and the lens assembly body can be movably passed through and installed in the hollow cavity; The biopsy forceps body comprises a biopsy forceps head, a first insertion part and an operation part, the two ends of the first insertion part are respectively connected with the biopsy forceps head and the operation part, the biopsy forceps head and the first insertion part can be movably inserted into the hollow cavity, the operating portion is located outside the hollow cavity, and the biopsy forceps head is controlled to open and close for sampling through the operating portion; The lens assembly body includes a hand-held part, a second insertion part and a miniature camera probe connected in sequence, and the miniature camera probe and the second insertion part can be movably inserted into the hollow cavity. 2 . The biopsy forceps for visualization endoscope according to claim 1 , wherein the first insertion part comprises a guide wire and a metal control wire, and one end of the guide wire is coaxially connected with a forceps head seat, and the A telescopic frame is slidably arranged on the inner side wall of the forceps head seat, the top of the telescopic frame is connected with the biopsy forceps head, the end of the biopsy forceps head is rotatably connected to the forceps head seat, and the inside of the guide wire is a hollow structure , the metal control wire slides through the hollow part inside the guide wire, one end of the metal control wire passes through the end of the guide wire and is connected to the bottom of the telescopic frame, and the other end of the metal control wire The other end of the guide wire is passed out and connected to the operation part. 3 . The biopsy forceps for visualization endoscope according to claim 2 , wherein the biopsy forceps head comprises a first forceps head body and a second forceps head body, and the upper part of the first forceps head body is clamped. 4 . The space and the clamping space at the upper part of the second forceps head body are arranged opposite to each other, and can be combined to form a clamping space for clamping the tissue at the lesion, and the first forceps head body and the lower part of the second forceps head body are both rotatably connected on the pliers head seat, and the bottoms of the first pliers head body and the second pliers head body are respectively connected with the top of the telescopic frame. 4 . The biopsy forceps for visualization endoscope according to claim 3 , wherein the operation part comprises a handle, a slip ring catheter and a slip ring, and one end of the guide wire away from the biopsy forceps head is coaxially provided with 4 . For the slip ring conduit, the slip ring is slidably sleeved on the outside of the slip ring conduit, and the slip ring is connected to the end of the metal control wire, and the end of the slip ring conduit away from the guide wire is provided with the handle. 5 . The biopsy forceps for visualization endoscope according to claim 2 , wherein the guide wire is a helical structure twisted from stainless steel wire. 6 . 6 . The biopsy forceps for visualization endoscope according to claim 1 , wherein the outer diameter of the outer sheath is 2-4 mm. 7 . 7 . The biopsy forceps for visualization endoscope according to claim 1 , wherein the model of the miniature camera probe is OmniVision OV6948. 8 .

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