CN111000596B - Alimentary canal tumour biopsy sampler - Google Patents

Abstract

The invention discloses a gastrointestinal tumor biopsy sampler, comprising a movable platform arranged above a hospital bed, a mounting assembly for fixing with the hospital bed is arranged below the movable platform, and a puncture needle for penetrating the gastrointestinal tract is connected above the movable platform , and the puncture needle is installed in the lifting mechanism arranged on the movable platform, the top plate of the lifting mechanism is connected with a pumping component for sucking tumor tissue fluid, and the pumping component is connected with the lifting mechanism through a transmission mechanism. The top plate and the telescopic piece move up and down along the inner wall of the kit to drive the puncture needle to follow the up and down movements into the patient's body. When the top plate and the puncture needle go up and down, the one-way transmission assembly is driven by the gear and the fixed straight rack to work, and the one-way transmission assembly drives the The impeller in the micro-pump rotates to suck the tumor tissue fluid when the puncture needle moves downward and is inserted into the tumor, and the micro-pump does not work when the puncture needle moves upward, thereby realizing the integrated function of puncture and biopsy sampling.

Description

A gastrointestinal tumor biopsy sampler

technical field

The invention relates to a medical instrument, in particular to a sampler for biopsy of digestive tract tumors.

Background technique

Tumor biopsy is to take a small amount of tissue from the patient's tumor site (clamping, cutting, excision, or puncture and suction can be used according to different situations) to make pathological sections, and the morphology of tumor cells and tissue structure is observed under a microscope to determine the tumor's shape. The nature, histological type and degree of differentiation can provide a reliable basis for clinical treatment.

In the process of gastrointestinal tumor biopsy, a puncture needle is used to penetrate the tumor in the body cavity to extract secretions for testing. Most existing gastrointestinal tumor biopsies need to be completed in two steps, to achieve penetration with a puncture needle, and then use other auxiliary equipment to extract Aspirating tumor tissue fluid for biopsy sampling is a complicated procedure.

SUMMARY OF THE INVENTION

Based on the deficiencies in the prior art mentioned in the above background art, the present invention provides a gastrointestinal tumor biopsy sampler.

The present invention overcomes the above technical problems by adopting the following technical solutions, specifically: a gastrointestinal tumor biopsy sampler, comprising a movable platform arranged above a hospital bed, and a mounting assembly for fixing with the hospital bed is arranged below the movable platform, A puncture needle for penetrating the digestive tract is connected above the movable platform, and the puncture needle is installed in a lifting mechanism arranged on the movable platform, and the top plate of the lifting mechanism is connected with a pump for sucking tumor tissue fluid assembly, the pumping assembly is connected to the lifting mechanism through a transmission mechanism. The lifting mechanism includes a set fixed on the movable platform, a telescopic piece slidably fitted on the set, a top plate that fixes the top of the telescopic piece and is fixed with the puncture needle, and is used to drive the telescopic piece and a power device that slides and lifts the top plate along the inner wall of the kit. The power device includes a cylinder mounted on the outer wall of the sleeve and a piston rod that is sealed and slidably connected to the cylinder, the top of the piston rod is fixedly connected to the top plate, and the cylinder is connected to an air pump through an air pipe.

As a further solution of the present invention: the transmission mechanism includes a straight rack fixed on the outer wall of the sleeve, a gear rotatably arranged under the top plate and meshed with the spur rack, and connected to the The one-way transmission assembly of the gear, and the second transmission member for connecting the one-way transmission assembly and the pumping assembly, wherein the one-way transmission assembly and the gear are both installed on the top plate and fixed on the top plate. The lower part of the mounting piece below.

As a further solution of the present invention: the one-way transmission assembly includes a ratchet wheel rotatably arranged at the lower part of the mounting member and connected to the first transmission member, a transmission wheel rotatably connected to the ratchet wheel and connected to the second transmission member, and a ratchet tooth for connecting the ratchet wheel and the transmission wheel, wherein the ratchet tooth is rotatably mounted on the ratchet wheel through an elastic member.

As a further solution of the present invention: the pumping assembly includes a micro-pump mounted on the top plate, an impeller rotatably arranged in the micro-pump and connected to the second transmission member, communicating with the inlet of the micro-pump and the The catheter with the upper port of the puncture needle, wherein the puncture needle is a hollow needle, and a plurality of capillary holes are opened on the circumference of the lower part.

As a further solution of the present invention: the installation assembly includes a lift rod installed on the lower side of the movable platform through a bearing, a support rod slidingly sleeved with the lift rod, and a support rod fixed at the lower part of the support rod for the same purpose. The edge of the hospital bed is clamped and fixed with a clamping piece, and a fixing wheel arranged on the upper part of the support rod and used for fixing the lifting rod.

As a further solution of the present invention, a fastening bolt for fixing the engaging element to the bed frame is provided below the engaging element.

As a further solution of the present invention, the fixed wheel is fixed with a lead screw that penetrates the support rod and is threadedly connected with it.

After adopting the above structure, compared with the prior art, the present invention has the following advantages: the device drives the top plate and the telescopic piece to move up and down along the inner wall of the kit through the power device, so as to drive the puncture needle to follow the up and down movements and probe into the body of the patient. At the same time of lifting, the one-way transmission assembly is driven by the action of the gear and the fixed straight rack to work, and the one-way transmission assembly drives the impeller in the micro pump to rotate and suck the tumor tissue fluid when the puncture needle moves downward and is inserted into the tumor by means of the second transmission member. When the puncture needle is moved up, the micro pump does not work, so as to realize the integrated function of puncture and biopsy sampling.

Description of drawings

FIG. 1 is a schematic diagram of the structure of a biopsy sampler for gastrointestinal tumors.

Fig. 2 is a partial enlarged view of the transmission mechanism in the alimentary tract tumor biopsy sampler.

FIG. 3 is a schematic structural diagram of a one-way transmission assembly in the alimentary tract tumor biopsy sampler.

FIG. 4 is a schematic structural diagram of a kit and a straight rack in the alimentary tract tumor biopsy sampler.

Figure 5 is a partial enlarged view of the puncture needle and capillary hole in the alimentary tract tumor biopsy sampler.

In the figure: 1- movable platform; 2- kit; 3- top plate; 4- telescopic piece; 5- cylinder; 6- piston rod; 7- puncture needle; 8- straight rack; 9- mounting piece; 10- gear; 11-first transmission part; 12-ratchet; 13-ratchet; 14-elastic part; 15-transmission wheel; 16-second transmission part; 17-micro pump; 18-duct; 19-support rod; 20-lifting Rod; 21-Fixed wheel; 22-Clamping piece.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

Please refer to FIGS. 1 to 5 . In the embodiment of the present invention, a sampler for gastrointestinal tumor biopsy includes a movable platform 1 arranged above a hospital bed, and a mounting assembly for fixing with the hospital bed is arranged below the movable platform 1 . A puncture needle 7 for penetrating the digestive tract is connected to the top of the puncture needle 7, and the puncture needle 7 is installed in a lifting mechanism arranged on the movable platform 1. The top plate of the lifting mechanism is connected with a pumping component for sucking tumor tissue fluid, and the pumping component passes through The transmission mechanism is connected with the lifting mechanism.

When the lifting mechanism drives the puncture needle 7 to move downward to penetrate the digestive tract of the patient, the moving lifting mechanism drives the transmission mechanism to drive the transmission mechanism to act, and the transmission mechanism drives the pumping component to work to extract the tumor tissue fluid penetrated by the puncture needle 7, thereby realizing puncture and The integrated function of biopsy and sampling, and the height and orientation of the puncture needle 7 can be adjusted with the cooperation of the installation components, which is convenient for biopsy sampling of gastrointestinal tumors in different parts.

The lifting mechanism includes a set 2 fixed on the movable platform 1, a telescopic piece 4 that is slidably sleeved on the set 2, a top plate 3 that fixes the top of the telescopic piece 4 and is fixed with the puncture needle 7, and is used to drive the telescopic piece 4 and the top plate 3 along the edge. The power device for sliding and lifting the inner wall of the kit 2;

The power device can be an electric power device, a pneumatic power device, and a hydraulic power device. When the power device drives the top plate 3 and the telescopic member 4 to move up and down along the inner wall of the kit 2, it drives the puncture needle 7 to move up and down, penetrating the patient's body for biopsy sampling.

The power unit includes a cylinder 5 installed on the outer wall of the kit 2 and a piston rod 6 that is sealed and slidably connected to the cylinder 5. The top of the piston rod 6 is fixedly connected to the top plate 3. The cylinder 5 is connected to the air pump through the air pipe, and the air pump is pumped to the cylinder 5 when it is working. Sending gas increases the pressure or extracting gas from the cylinder 5 reduces the pressure, thereby driving the piston rod 6 to expand and contract under the pneumatic power, and then driving the puncture needle 7 to penetrate into the patient's body or withdraw it from the patient's body.

In yet another embodiment of the present invention, the transmission mechanism includes a spur gear 8 fixed on the outer wall of the sleeve 2 , a gear 10 rotatably arranged under the top plate 3 and meshing with the spur rack 8 , and the gear is connected through a first transmission member 11 . The one-way transmission assembly of 10 and the second transmission member 16 for connecting the one-way transmission assembly and the pumping assembly, wherein, the one-way transmission assembly and the gear 10 are both installed in the lower part of the mounting member 9 fixed under the top plate 3;

The top plate 3 and the telescopic member 4 are driven up and down along the inner wall of the kit 2 by the power device, thereby driving the gear 10 to rotate with the fixed straight rack 8. The gear 10 drives the one-way transmission assembly to work by means of the first transmission member 11, so as to use the second transmission. The component 16 drives the pumping assembly to work to realize the one-way suction function. Only when the puncture needle 7 moves downward and is inserted into the patient's body, the pumping assembly works to extract the tumor tissue fluid in the patient.

In yet another embodiment of the present invention, the one-way transmission assembly includes a ratchet 12 rotatably disposed at the lower part of the mounting member 9 and connected to the first transmission member 11 , a transmission wheel 15 rotatably connected to the ratchet 12 and connected to the second transmission member 16 , and the ratchet teeth 13 for connecting the ratchet wheel 12 and the transmission wheel 15, wherein the ratchet teeth 13 are rotatably mounted on the ratchet wheel 12 through the elastic member 14;

When the gear 10 moves up, it rotates counterclockwise under the action of the straight rack 8, the first transmission member 11 drives the ratchet 12 to rotate counterclockwise, and the ratchet 12 drives the ratchet 13 to rotate counterclockwise. At this time, the ratchet 13 squeezes the elastic member 14 can not drive the transmission wheel 15 to rotate;

On the contrary, when the gear 10 moves down, it rotates clockwise under the action of the straight rack 8, the first transmission member 11 drives the ratchet 12 to rotate clockwise, and the ratchet 12 drives the ratchet 13 to rotate clockwise. At this time, the ratchet 13 The transmission wheel 15 is driven to rotate clockwise, and the transmission wheel 15 drives the pumping component to work by means of the second transmission member 16 to suck the tumor tissue fluid.

In yet another embodiment of the present invention, the pumping assembly includes a micro-pump 17 mounted on the top plate 3 , an impeller rotatably arranged in the micro-pump 17 and connected to the second transmission member 16 , and communicating with the inlet of the micro-pump 17 and the puncture needle 7 . The upper port of the catheter 18, wherein the puncture needle 7 is a hollow needle with a plurality of capillary holes on the lower circumference.

In yet another embodiment of the present invention, the installation assembly includes a lift rod 20 mounted on the lower side of the movable platform 1 through a bearing, a support rod 19 slidably sleeved with the lift rod 20, and fixed at the lower part of the support rod 19 for the same hospital bed An engaging member 22 for fixing the edge by engaging and fixing, and a fixing wheel 21 arranged on the upper part of the support rod 19 for fixing the lifting rod 20, wherein a fastening bolt for fixing the engaging member 22 and the bed frame is provided below the engaging member 22 , the fixed wheel 21 is fixed with a lead screw that penetrates the support rod 19 and is threadedly connected with it;

Fastening bolts are used to fix the engaging piece 22 to the bed frame of the hospital bed, thereby fixing the support rod 19, and adjusting the height of the lifting rod 20 to adjust the height of the movable platform 1, which is convenient for adjusting the height of the puncture needle 7 for patients of different sizes , and there is rotational freedom between the lifting rod 20 installed by the bearing and the movable platform 1, which is convenient for the puncture needle 7 to rotate around the support rod 19 to adjust the orientation, and the fixed wheel 21 drives the lead screw to be fixed with the support rod 19, and abuts the lift rod 20, thereby fixing the height of the movable platform 1.

The above only describes the best embodiments of the present invention, but should not be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof can be changed. Any changes made within the protection scope of the independent claims of the present invention are all within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Claims (4)

1. The utility model provides a alimentary canal tumour biopsy sampler, is including setting up movable platform (1) in sick bed top, a serial communication port, movable platform (1) below is provided with and is used for with the fixed installation component of sick bed the top of movable platform (1) is connected with pjncture needle (7) that are used for piercing through the alimentary canal, just pjncture needle (7) are installed in setting up lift on the movable platform (1)

In the mechanism, the top plate of the lifting mechanism is connected with a pumping assembly for pumping tumor tissue fluid, the pumping assembly is connected with the lifting mechanism through a transmission mechanism, and the lifting mechanism comprises a sleeve (2) fixed on the movable platform (1) and a sliding sleeve fitted on the sleeve (2)

The telescopic part (4), a top plate (3) which is used for fixing the top of the telescopic part (4) and is fixed with the puncture needle (7), and a power device which is used for driving the telescopic part (4) and the top plate (3) to slide and lift along the inner wall of the sleeve (2), wherein the power device comprises an air cylinder (5) which is arranged on the outer wall of the sleeve (2) and a piston rod (6) which is in sealing sliding connection with the air cylinder (5), the top of the piston rod (6) is fixedly connected with the top plate (3), and the air cylinder (5) is communicated with an air pump through an air pipe;

the transmission mechanism comprises a spur rack (8) fixed on the outer wall of the sleeve (2), a gear (10) rotatably arranged below the top plate (3) and meshed with the spur rack (8), a one-way transmission assembly connected with the gear (10) through a first transmission piece (11), and a second transmission piece (16) used for connecting the one-way transmission assembly with the pumping assembly, wherein the one-way transmission assembly and the gear (10) are both arranged on the lower part of a mounting piece (9) fixed below the top plate (3);

the one-way transmission assembly comprises a ratchet wheel (12) which is rotatably arranged at the lower part of the mounting part (9) and is connected with the first transmission part (11), a transmission wheel (15) which is rotatably connected with the ratchet wheel (12) and is connected with the second transmission part (16), and ratchet teeth (13) which are used for connecting the ratchet wheel (12) and the transmission wheel (15), wherein the ratchet teeth (13) are rotatably arranged on the ratchet wheel (12) through an elastic part (14);

the pumping assembly comprises a micro pump (17) arranged on the top plate (3), an impeller which is rotatably arranged in the micro pump (17) and connected with the second transmission piece (16), and a conduit (18) which is communicated with an inlet of the micro pump (17) and an upper opening of the puncture needle (7), wherein the puncture needle (7) is a hollow needle, and a plurality of capillary holes are formed in the circumference of the lower part of the puncture needle.

2. The biopsy sampler for digestive tract tumors according to claim 1, wherein the mounting assembly comprises a lifting rod (20) mounted on one side below the movable platform (1) through a bearing, a supporting rod (19) slidably sleeved with the lifting rod (20), a clamping piece (22) fixed on the lower part of the supporting rod (19) and used for clamping and fixing with the edge of a hospital bed, and a fixing wheel (21) arranged on the upper part of the supporting rod (19) and used for fixing the lifting rod (20).

3. The biopsy sampler for digestive tract tumors according to claim 2, characterized in that fastening bolts for fixing the snap-fit member (22) with the bed frame are arranged below the snap-fit member (22).

4. The sampler for digestive tract tumor biopsy according to claim 3, characterized in that the fixed wheel (21) is fixed with a lead screw which penetrates the supporting rod (19) and is connected with the supporting rod through screw thread.

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