CN111973235B

CN111973235B - Kidney puncture sampling device

Info

Publication number: CN111973235B
Application number: CN202010893566.7A
Authority: CN
Inventors: 林淑芃
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-04
Anticipated expiration: 2040-08-31
Also published as: CN111973235A

Abstract

The invention belongs to the technical field of medical instruments, in particular to a renal puncture sampling device; comprises a fixed tube; the bottom end of the fixed cylinder is connected with an outer needle tube, and an inner needle tube is inserted in the outer needle tube in a sliding manner; the top end of the inner needle tube is rotationally connected with a threaded tube through a rotating sleeve; an internal thread disc is fixedly arranged in the fixed cylinder; a sealing plug is arranged in the inner needle tube, and a pushing rod is inserted in the inner needle tube; the bottom end of the outer needle tube is provided with a needle head in a subsection manner; the medical sealing membrane plate is attached to the needle opening of the needle head in a sliding manner; the upper side of the needle opening at the end part of the needle head is provided with a mounting cavity; the inner cavity wall of the outer needle tube is provided with a sliding groove, and a nanofiber rope is arranged in the sliding groove in a sliding manner; one end of the nanofiber rope penetrates through the installation cavity to be connected to the upper end of the medical sealing membrane plate, and the nanofiber rope is wound on the outer wall of the threaded pipe; other tissues are prevented from entering the position of the tube opening of the inner needle tube, and the accurate analysis and detection of the disease cause of the sampled pathological change tissue by detection personnel are further improved.

Description

Kidney puncture sampling device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a renal puncture sampling device.

Background

The kidney is an important metabolic organ of a human body, and the kidney biopsy is called kidney biopsy for short, so that the important examination method for determining the nature and the pathological type of kidney diseases, determining treatment guidelines and judging prognosis is used. Can be used for treating asymptomatic hematuria, albuminuria, acute nephritis, primary nephrotic syndrome, secondary nephritis or hereditary nephritis.

In clinical research and diagnosis, biopsy is often used to sample the site to be studied or diagnosed. That is, a site or tissue to be studied or analyzed is sampled, and the sampled sample is cultured and examined to obtain convincing and targeted results or conclusions. In the application of extracting a small amount of samples, the biopsy needle is an important instrument, and is widely accepted due to small wound surface and flexible operation.

Chinese patent discloses a kidney biopsy sampler, and patent application number is 2018208486219, including handle and bottom block, open the handle upper end has the mouth of rotating, and the handle upper end rotates through it to rotate mouthful to be connected with the bottom block, swing joint has the movable block in the middle of the handle front end, and handle front end downside rotates and is connected with the turn button, and the handle lower extreme is opened there is the flexible mouth, and the handle lower extreme utilizes its flexible mouthful telescopic connection to have the sampling head.

The above patent is capable of taking needle biopsy samples; but because the needle mouth of sampling head most is in open state, and the inside comparatively complicated of patient's kidney, remain the wastes material easily, the poison, metabolite etc. and then when the pjncture needle reachd patient's kidney position, the needle mouth department of pjncture needle can remain the contact and have the metabolite, and the sampling head also has blood tissue to get into in the needle mouth of a chinese operas in the route that penetrates, and then the accurate high-efficient sample operation of the pathological change tissue of influence puncture to kidney inside, the phenomenon of the accurate analysis of medical personnel to the focus has been influenced.

Disclosure of Invention

In order to make up for the defects of the prior art, the kidney puncture sampling device provided by the invention is mainly used for solving the problem that when the existing sampling device is used, most of the needle opening of the sampling head is in an open state, and the inside of the kidney of a patient is relatively complex, so that wastes, poisons, metabolites and the like are easily remained, and further when the puncture needle reaches the position of the kidney of the patient, the needle opening of the puncture needle is in residual contact with the metabolites, so that the accurate and efficient sampling operation of the puncture needle for pathological change tissues in the kidney is influenced, and the accurate analysis of medical staff on focuses is influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a renal puncture sampling device, which comprises a fixed tube; the bottom end of the fixed cylinder is connected with an outer needle tube, and an inner needle tube is inserted in the outer needle tube in a sliding manner; the top end of the inner needle tube is rotatably connected with a threaded tube through a rotating sleeve, and the top end of the threaded tube is provided with a rotating handle; an internal thread disc is fixedly arranged in the fixed cylinder, and a threaded pipe is connected with the internal thread of the internal thread disc; a sealing plug is arranged in the inner needle tube, and a pushing rod is inserted in the inner needle tube; the bottom end of the push rod is connected to the upper end of the sealing plug; the bottom end of the outer needle tube is provided with a needle head in a segmented manner, and two sides of a needle opening at the end part of the needle head are provided with sliding guide grooves; a sliding strip is arranged in the sliding guide groove in a sliding mode, and a medical sealing membrane plate is arranged on the outer side of the sliding strip; the medical sealing membrane plate is attached to the needle opening of the needle head in a sliding manner; an installation cavity is formed in the upper side of a needle opening in the end part of the needle head and is positioned above the medical sealing diaphragm plate; the inner cavity wall of the outer needle tube is provided with a sliding groove, and a nanofiber rope is arranged in the sliding groove in a sliding manner; one end of the nanofiber rope penetrates through the installation cavity to be connected to the upper end of the medical sealing membrane plate, and the nanofiber rope is wound on the outer wall of the threaded pipe through the spiral winding mechanism; a fiber spring is arranged in the mounting cavity and is sleeved on the nanofiber rope;

when the device works, when the pathological change tissue in the kidney needs to be punctured and sampled, medical staff firstly disinfect the skin part to be punctured, and anesthesia is carried out on the patient according to the judgment of the patient or the medical staff on the etiology of the patient; the assistant personnel adopts B-ultrasonic to carry out assistant puncture, then the medical personnel holds the fixed tube by hand, so that the needle head of the outer needle tube penetrates into the skin tissue, the outer needle tube and the inner needle tube can reach the pathological change position of the kidney part of a patient along with the continuous exertion of the medical personnel, the outer wall of the medical sealing diaphragm plate jointed at the needle opening of the needle head can be bonded with blood or the tissue inside the kidney, further sealing the mouth of the inner needle tube in the outer needle tube, rotating the rotating handle at the top end of the fixed tube by medical personnel, the screwed tube can rotate downwards in the fixed tube, the rotation of the screwed tube drives the spiral winding mechanism to rotate, so that the nano-fiber rope can be wound on the spiral winding mechanism, the pulling of the nano-fiber rope can drive the medical sealing membrane plate to slide into the installation cavity, meanwhile, the fiber spring is compressed, so that the medical sealing membrane plate attached to the needle opening of the needle head can be pulled to be separated; then the screwed pipe moves downwards to push the bottom end of the inner needle tube to extend out of the needle opening of the needle head, at the moment, the sealing plug and the pushing rod move synchronously along with the inner needle tube, so that the needle opening of the inner needle tube reaches the position of a pathological change tissue, then a medical worker pulls the pushing rod upwards, the pathological change tissue contacted with the needle opening of the inner needle tube is sucked into the inner needle tube by the upward suction force of the sealing plug, then the medical worker rotates the rotating handle reversely, the screwed pipe moves upwards to drive the inner needle tube to contract into the outer needle tube, the nanofiber rope wound on the spiral winding mechanism is loosened, the restoring force of the fiber spring can push the medical sealing diaphragm plate to slide downwards to be attached to the needle opening of the needle head, the inner needle tube positioned in the outer needle tube can be sealed, the medical worker slowly extracts the outer needle tube from the body of a patient, and then; through the medical sealing diaphragm plate arranged at the needle opening of the needle head in a sliding manner, when the outer needle tube penetrates into the human tissue, the medical sealing diaphragm plate can protect the needle opening of the inner needle tube, so that the human tissue or other tissues in the kidney are prevented from entering the inner needle tube, and the sampling device is further influenced to accurately sample the lesion tissue; meanwhile, when the outer needle tube is drawn out, the medical sealing membrane plate is attached to the needle opening of the needle head, so that the sampled pathological change tissue can be sealed and protected, other tissues are prevented from entering the position of the tube opening of the inner needle tube, and the accurate analysis and detection of the pathogeny of the sampled pathological change tissue by a detector are influenced; and the needle mouth most of current puncture sampling device's pjncture needle is in uncovered state, because the inside comparatively complicated of patient's kidney, remains waste, poison, metabolite etc. easily, and then when the pjncture needle reachd patient's kidney position, the needle mouth department of pjncture needle can remain the contact and have the metabolite, and then influences the puncture to the accurate high-efficient sample operation of the pathological change tissue of kidney inside, has influenced medical personnel to the phenomenon of the accurate analysis of focus.

Preferably, the spiral winding mechanism comprises a sleeve, a rotating ring, a supporting rod and a T-shaped elastic block; the sleeve is sleeved on the threaded pipe and is positioned at the bottom end of the internal thread disc; the bottom end of the sleeve is rotatably connected with a plurality of supporting rods through rotating rings, and the supporting rods are fixed at the bottom end of the fixed pipe; a T-shaped sliding groove is formed in the outer side wall of the threaded pipe in the vertical direction, and an annular clamping groove is formed in the upper end of the T-shaped sliding groove; the inner wall of the sleeve is provided with a T-shaped elastic block, and the T-shaped elastic block slides up and down in the T-shaped sliding groove; the outer wall of the sleeve is connected with a nano-fiber rope; when the device works, when the threaded pipe rotates, the threaded pipe can drive the sleeve to rotate through the T-shaped elastic block, the support rod can rotatably support the sleeve, the nanofiber rope connected to the outer wall of the sleeve can be wound on the sleeve, and the T-shaped elastic block can slide along the T-shaped sliding groove as the threaded pipe needs to move downwards during rotation; after the medical sealing diaphragm plate slides into the installation cavity, the T-shaped elastic block slides into the annular clamping groove, the annular clamping groove 52 can rotationally clamp the T-shaped elastic block, and the annular clamping groove 52 can enable the T-shaped elastic block to stretch and deform along with the continuous downward movement of the threaded pipe, so that the inner needle tube can extend out of the outer needle tube conveniently; when needle tubing when taking in outer needle tubing in needs, medical personnel antiport rotates the handle, according to interior needle tubing when stretching out the number of turns, and then antiport rotates the handle for in T type elastic block can block into T type spout, rotate the screwed pipe again and make interior needle tubing upwards slide, medical sealed diaphragm plate slides under fiber spring's thrust simultaneously and laminates the needle mouth department of syringe needle, and then seals once more to the needle mouth of syringe needle.

Preferably, the T-shaped elastic block comprises a clamping rod and a pull rod; the clamping rod is clamped in the T-shaped sliding groove in a sliding mode, and an extrusion cavity is formed in the clamping rod; the pull rod is made of hard rubber and is connected to the inner wall of the sleeve; the during operation, when T type elastic block received ring groove's downward tensile joint, the kelly that slides in the ring groove can receive the extrusion, and then the extrusion chamber that sets up can increase the tensile deflection of kelly, and the screwed pipe of being convenient for can make the needle mouth of interior needle tubing can stretch out the syringe needle position of interior needle tubing completely when the downstream, and the pathological change tissue of being convenient for interior needle tubing carries out quick sample operation.

Preferably, a cavity elastic membrane column is arranged between the groove wall of the sliding guide groove and the sliding strip, and one end of the cavity elastic membrane column is connected to the bottom groove wall of the sliding guide groove; the other end of the cavity elastic membrane column is connected to the inner side wall of the sliding strip; when the medical sealing membrane plate slides into the mounting cavity under the pulling of the nanofiber rope, the cavity elastic membrane column connected with the side wall of the sliding strip can be stretched, and meanwhile, the sliding strip can slide along the sliding guide groove; when the medical sealing diaphragm plate slides outside the installation cavity under the restoring force of the fiber spring, the sliding strip arranged plays a role in guiding and sliding in the sliding guide groove, and meanwhile, the restoring contracting force of the cavity elastic diaphragm column can also drive the sliding strip to slide towards the bottom end of the sliding guide groove, so that the medical sealing diaphragm plate can be quickly attached to the needle opening of the needle head in a sealing manner, and the sealing effect of the medical sealing diaphragm plate is improved.

Preferably, an expansion cavity is formed in the inner wall of the outer ring of the medical sealing diaphragm plate, and the thickness of the outer wall of the expansion cavity is larger than that of the inner wall of the expansion cavity; the outer wall of the top end of the cavity elastic membrane column is provided with an air guide groove, and the air guide groove penetrates through the sliding strip and is communicated into the expansion cavity; the during operation, when the needle mouth department of laminating the syringe needle is slided downwards to medical sealed lamina membranacea, can make inside gas pass through the air guide groove and lead to the inflation intracavity and make the inflation chamber inflation during the recovery shrink of cavity elasticity diaphragm column, and then make the increase of medical sealed lamina membranacea thickness, the needle mouth department of syringe needle is closely laminated to the inner wall of the medical sealed lamina membranacea of inflation chamber simultaneously, and then improve the sealed effect of medical sealed lamina membranacea in needle mouth department of power, when effectively preventing to take out when outer needle pipe, because the immersion or the phenomenon that flows and lead to medical sealed lamina membranacea to produce the perk of patient's internal liquid, and then influence the sealed save effect of needle mouth of medical sealed lamina membranacea to interior needle pipe.

Preferably, the outer wall of the medical sealing membrane plate is adhered with liquid-absorbing medical non-woven fabrics; an elastic extrusion strip is arranged on the inner cavity wall at the bottom end of the mounting cavity, the outer wall of one side of the elastic extrusion strip is of an arc-shaped structure, and a conical protruding part is arranged on the other side of the elastic extrusion strip; when the medical needle tube is in operation, when the outer needle tube is inserted into the kidney, the imbibing medical non-woven fabric is attached to the outer wall of the medical sealing membrane plate, so that metabolic tissues bonded to the outer wall of the medical sealing membrane plate of the outer needle tube can be absorbed; when the medical sealing diaphragm plate slides into the mounting cavity, the stretching of the cavity elastic diaphragm column can pump out the gas in the expansion cavity, so that the thickness of the medical sealing diaphragm plate is reduced, and the medical sealing diaphragm plate can conveniently slide into the mounting cavity; when medical sealed diaphragm plate roll-off, the compression of cavity elasticity diaphragm column can make medical sealed diaphragm plate inflation, and then the installation cavity tip sets up and elastic extrusion strip can strike off absorptive tissue debris on the medical non-woven fabrics of imbibition, and then be convenient for strike off the installation cavity with absorptive excessive tissue debris on the medical non-woven fabrics of imbibition, prevent that the dustcoat pipe when taking out, absorb remaining tissue debris on the medical non-woven fabrics of imbibition too much, and then lead to organizing debris to remain in the puncture hole, and then cause the phenomenon of secondary injury to the patient.

The invention has the following beneficial effects:

according to the medical sealing diaphragm plate arranged at the needle opening of the needle head in a sliding manner, when the outer needle tube penetrates into the human tissue, the medical sealing diaphragm plate can protect the needle opening of the inner needle tube, so that the human tissue or other tissues in the kidney are prevented from entering the inner needle tube, and the sampling device is further influenced to accurately sample the pathological change tissue; simultaneously when outer syringe needle was taken out, medical sealed diaphragm plate laminated the needle mouth department of syringe needle, can seal the protection to the pathological change tissue after the sample, prevented that other tissues from entering into the mouth of pipe position of interior syringe needle, and then improved the accurate analysis and detection of the etiology of the pathological change tissue after the measurement personnel is to the sample.

The elastic extrusion strip can scrape off tissue sundries absorbed on the liquid-absorbing medical non-woven fabric, so that excessive tissue sundries absorbed on the liquid-absorbing medical non-woven fabric can be scraped and collected to the mounting cavity conveniently; prevent that the medical non-woven fabrics of imbibition from absorbing remaining tissue debris too much when the outer cover pipe is taken out, and then lead to the tissue debris to remain in the puncture, and then cause the phenomenon of secondary damage to the patient.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a structural view of the spiral winding mechanism of the present invention;

FIG. 3 is an assembly view of the outer and inner needle cannulae of the present invention;

FIG. 4 is a cross-sectional view of the needle of the present invention;

FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 3;

in the figure: the medical needle comprises a fixed tube 1, an outer needle tube 2, a needle 21, a sliding guide groove 22, a mounting cavity 23, an inner needle tube 3, a rotating sleeve 4, a threaded tube 5, a T-shaped sliding groove 51, an annular clamping groove 52, a rotating handle 6, a spiral winding mechanism 7, a sleeve 71, a rotating ring 72, a supporting rod 73, a T-shaped elastic block 74, a clamping rod 741, a pull rod 742, an inner threaded disc 8, a sealing plug 9, a push rod 10, a sliding strip 11, a medical sealing membrane plate 12, an expansion cavity 121, a nanofiber rope 13, a fiber spring 14, a cavity elastic membrane column 15, an air guide groove 151, medical liquid-absorbing non-woven fabric 16 and an elastic extrusion strip 17.

Detailed Description

A renal biopsy sampling device according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.

As shown in fig. 1-5, the present invention provides a renal biopsy sampling device, which comprises a fixed tube 1; the bottom end of the fixed cylinder is connected with an outer needle tube 2, and an inner needle tube 3 is inserted in the outer needle tube 2 in a sliding manner; the top end of the inner needle tube 3 is rotatably connected with a threaded tube 5 through a rotating sleeve 4, and the top end of the threaded tube 5 is provided with a rotating handle 6; an internal thread disc 8 is fixedly arranged in the fixed cylinder, and a threaded pipe 5 is connected with the internal thread of the internal thread disc 8; a sealing plug 9 is arranged in the inner needle tube 3, and a push rod 10 is inserted in the inner needle tube 3; the bottom end of the push rod 10 is connected to the upper end of the sealing plug 9; the bottom end of the outer needle tube 2 is provided with a needle head 21 in a subsection manner, and two sides of a needle opening at the end part of the needle head 21 are provided with sliding guide grooves 22; a sliding strip 11 is arranged in the sliding guide groove 22 in a sliding manner, and a medical sealing membrane plate 12 is arranged on the outer side of the sliding strip 11; the medical sealing membrane plate 12 is attached to the needle opening of the needle head 21 in a sliding manner; an installation cavity 23 is formed in the upper side of a needle opening at the end part of the needle head 21, and the installation cavity 23 is positioned above the medical sealing diaphragm plate 12; the inner cavity wall of the outer needle tube 2 is provided with a sliding groove, and a nanofiber rope 13 is arranged in the sliding groove in a sliding manner; one end of the nanofiber rope 13 penetrates through the installation cavity 23 to be connected to the upper end of the medical sealing membrane plate 12, and the nanofiber rope 13 is wound on the outer wall of the threaded pipe 5 through the spiral winding mechanism 7; a fiber spring 14 is arranged in the mounting cavity 23, and the fiber spring 14 is sleeved on the nano fiber rope 13;

when the device works, when the pathological change tissue in the kidney needs to be punctured and sampled, medical staff firstly disinfect the skin part to be punctured, and anesthesia is carried out on the patient according to the judgment of the patient or the medical staff on the etiology of the patient; an assistant person adopts B ultrasonic to perform assistant puncture, then a medical care person holds the fixed tube 1 by hand, so that the needle head 21 of the outer needle tube 2 penetrates into skin tissue, the outer needle tube 2 and the inner needle tube 3 can reach the pathological change position of the kidney part of a patient along with the continuous exertion of the medical care person, at the moment, blood or tissue inside the kidney can be bonded on the outer wall of the medical sealing membrane plate 12 attached to the needle opening of the needle head 21, further, the opening of the inner needle tube 3 positioned in the outer needle tube 2 can be sealed, the medical care person rotates the rotating handle 6 at the top end of the fixed tube 1, the threaded tube 5 can rotate downwards in the fixed tube 1, the rotation of the threaded tube 5 drives the spiral winding mechanism 7 to rotate, so that the nano fiber rope 13 can be wound on the spiral winding mechanism 7, the pulling of the nano fiber rope 13 can drive the medical sealing membrane plate 12 to slide into the mounting cavity 23, and the fiber spring 14, further pulling and separating the medical sealing membrane plate 12 attached to the needle opening of the needle head 21; then the threaded tube 5 moves downwards to push the bottom end of the inner needle tube 3 to extend out of the needle opening of the needle head 21, at the moment, the sealing plug 9 and the pushing rod 10 move synchronously along with the inner needle tube 3, so that the needle opening of the inner needle tube 3 reaches the position of pathological change tissue, then the medical staff pulls the pushing rod 10 upwards, the upward suction force of the sealing plug 9 can suck the lesion tissues contacted with the needle opening of the inner needle tube 3 into the inner needle tube 3, then the medical staff rotates the rotating handle 6 reversely, the screwed pipe 5 moves upwards to drive the inner needle tube 3 to contract into the outer needle tube 2, the nanometer fiber rope 13 wound on the spiral winding mechanism 7 loosens, the restoring force of the fiber spring 14 pushes the medical sealing diaphragm plate 12 to slide downwards to be attached to the needle mouth of the needle head 21, the inner needle tube 3 positioned in the outer needle tube 2 can be sealed, and medical staff can slowly draw out the outer needle tube 2 from the body of a patient, so that the kidney can be punctured and sampled; through the medical sealing diaphragm plate 12 arranged at the needle opening of the needle head 21 in a sliding manner, when the outer needle tube 2 penetrates into the human tissue, the medical sealing diaphragm plate 12 can protect the needle opening of the inner needle tube 3, so that the human tissue or other tissues in the kidney are prevented from entering the inner needle tube 3, and the sampling device is further influenced to accurately sample the pathological change tissue; meanwhile, when the outer needle tube 2 is drawn out, the medical sealing diaphragm plate 12 is attached to the needle opening of the needle head 21, so that the sampled pathological change tissue can be sealed and protected, other tissues are prevented from entering the position of the tube opening of the inner needle tube 3, and the accurate analysis and detection of the pathogeny of the sampled pathological change tissue by a detector are influenced; and the needle mouth most of current puncture sampling device's pjncture needle is in uncovered state, because the inside comparatively complicated of patient's kidney, remains waste, poison, metabolite etc. easily, and then when the pjncture needle reachd patient's kidney position, the needle mouth department of pjncture needle can remain the contact and have the metabolite, and then influences the puncture to the accurate high-efficient sample operation of the pathological change tissue of kidney inside, has influenced medical personnel to the phenomenon of the accurate analysis of focus.

As an embodiment of the present invention, the spiral winding mechanism 7 includes a sleeve 71, a rotating ring 72, a support rod 73, and a T-shaped elastic block 74; the sleeve 71 is sleeved on the threaded pipe 5, and the sleeve 71 is positioned at the bottom end of the internal thread disc 8; the bottom end of the sleeve 71 is rotatably connected with a plurality of support rods 73 through a rotating ring 72, and the plurality of support rods 73 are fixed at the bottom end of the fixed pipe 1; a T-shaped sliding groove 51 is formed in the outer side wall of the threaded pipe 5 in the vertical direction, and an annular clamping groove 52 is formed in the upper end of the T-shaped sliding groove 51; a T-shaped elastic block 74 is mounted on the inner wall of the sleeve 71, and the T-shaped elastic block 74 slides up and down in the T-shaped sliding groove 51; the outer wall of the sleeve 71 is connected with a nano-fiber rope 13; when the device works, when the threaded pipe 5 rotates, the threaded pipe 5 drives the sleeve 71 to rotate through the T-shaped elastic block 74, the support rod 73 can rotatably support the sleeve 71, the nanofiber rope 13 connected to the outer wall of the sleeve 71 is wound on the sleeve 71, and the T-shaped elastic block 74 slides along the T-shaped sliding groove 51 as the threaded pipe 5 needs to move downwards during rotation; after the medical sealing diaphragm plate 12 slides into the mounting cavity 23, the T-shaped elastic block 74 slides into the annular clamping groove 52, the annular clamping groove 52 rotationally clamps the T-shaped elastic block 74, and the annular clamping groove 52 enables the T-shaped elastic block 74 to stretch and deform as the threaded pipe 5 continues to move downwards, so that the inner needle tube 3 can extend out of the outer needle tube 2 conveniently; when needing interior needle tubing 3 to take in outer needle tubing 2 in, medical personnel antiport rotates handle 6, according to interior needle tubing 3 when stretching out the number of turns that rotates, and then antiport rotates handle 6 for in T type elastic block 74 can block into T type spout 51, rotate screwed pipe 5 again and make interior needle tubing 3 upwards slide, medical sealed diaphragm 12 slides under fiber spring 14's thrust simultaneously and laminates to the needle mouth department of syringe needle 21, and then seals once more to the needle mouth of syringe needle 21.

As an embodiment of the present invention, the T-shaped elastic block 74 includes a clamping rod 741 and a pulling rod 742; the clamping rod 741 is clamped in the T-shaped sliding groove 51 in a sliding manner, and an extrusion cavity is formed in the clamping rod 741; the pull rod 742 is made of hard rubber, and the pull rod 742 is connected to the inner wall of the sleeve 71; when the T-shaped elastic block 74 is clamped by downward stretching of the annular clamping groove 52, the clamping rod 741 sliding into the annular clamping groove 52 is extruded, the arranged extrusion cavity can increase the tensile deformation of the clamping rod 741, the threaded pipe 5 can enable the needle opening of the inner needle pipe 3 to completely stretch out of the needle head 21 of the inner needle pipe 3 when moving downwards, and therefore rapid sampling operation of lesion tissues in the inner needle pipe 3 is facilitated.

As an embodiment of the invention, a hollow elastic membrane column 15 is arranged between the wall of the sliding guide groove 22 and the sliding bar 11, and one end of the hollow elastic membrane column 15 is connected to the bottom groove wall of the sliding guide groove 22; the other end of the hollow elastic membrane column 15 is connected to the inner side wall of the sliding strip 11; when the medical sealing membrane plate 12 slides into the installation cavity 23 under the pulling of the nanofiber rope 13, the cavity elastic membrane column 15 connected with the side wall of the sliding strip 11 is stretched, and meanwhile, the sliding strip 11 slides along the sliding guide groove 22; when the medical sealing diaphragm plate 12 slides outwards towards the mounting cavity 23 under the restoring force of the fiber spring 14, the sliding strip 11 arranged plays a role in guiding sliding in the sliding guide groove 22, and meanwhile, the restoring contracting force of the cavity elastic diaphragm column 15 can also drive the sliding strip 11 to slide towards the bottom end of the sliding guide groove 22, so that the medical sealing diaphragm plate 12 can be quickly sealed and attached to the needle opening of the needle head 21, and the sealing effect of the medical sealing diaphragm plate 12 is improved.

As an embodiment of the present invention, an expansion cavity 121 is formed in an inner wall of an outer ring of the medical sealing diaphragm 12, and a thickness of an outer wall of the expansion cavity 121 is greater than a thickness of an inner wall of the expansion cavity 121; the outer wall of the top end of the cavity elastic membrane column 15 is provided with an air guide groove 151, and the air guide groove 151 penetrates through the sliding strip 11 and is communicated into the expansion cavity 121; during operation, when medical sealed diaphragm 12 slides downwards and laminates to the needle mouth department of syringe needle 21, the recovery of cavity elasticity diaphragm 15 can make inside gas pass through air guide groove 151 and lead to in expanding chamber 121 and make expanding chamber 121 expand during the shrink, and then make the thickness increase of medical sealed diaphragm 12, the needle mouth department of syringe needle 21 is closely laminated to the inner wall of the medical sealed diaphragm 12 of the inflation of expanding chamber 121 simultaneously, and then improve the sealed effect of medical sealed diaphragm 12 in needle mouth department, when outer needle tube 2 takes out, because the phenomenon that medical sealed diaphragm 12 produced the perk is leaded to in the infiltration or the flow of the internal liquid of patient, and then influence medical sealed preservation effect of the needle mouth of needle tube 3 of medical sealed diaphragm 12.

In one embodiment of the present invention, a liquid-absorbent medical nonwoven fabric 16 is bonded to the outer wall of the medical sealing membrane 12; an elastic extrusion strip 17 is arranged on the inner cavity wall at the bottom end of the mounting cavity 23, the outer wall of one side of the elastic extrusion strip 17 is of an arc-shaped structure, and the other side of the elastic extrusion strip 17 is a conical bulge; when the medical sealing membrane plate is in work, when the outer needle tube 2 is inserted into the kidney, the imbibing medical non-woven fabric 16 is attached to the outer wall of the medical sealing membrane plate 12, and metabolic tissues bonded to the outer wall of the medical sealing membrane plate 12 of the outer needle tube 2 can be absorbed; when the medical sealing diaphragm plate slides into the installation cavity 23, the stretching of the cavity elastic diaphragm column 15 can extract the gas in the expansion cavity 121, so that the thickness of the medical sealing diaphragm plate 12 is reduced, and the medical sealing diaphragm plate 12 can slide into the installation cavity 23 conveniently; when medical sealed lamina membranacea 12 roll-off, the compression of cavity elasticity membrane post 15 can make medical sealed lamina membranacea 12 inflation, and then the installation cavity 23 tip sets up and elasticity extrusion strip 17 can strike off absorptive tissue debris on the medical non-woven fabrics of imbibition 16, and then be convenient for strike off the installation cavity 23 with absorptive excessive tissue debris on the medical non-woven fabrics of imbibition 16, prevent that the dustcoat pipe when taking out, absorb remaining tissue debris too much on the medical non-woven fabrics of imbibition 16, and then lead to organizing debris to remain in the puncture, and then cause the phenomenon of secondary damage to the patient.

The specific working process is as follows:

when the device works, when the pathological tissue in the kidney needs to be punctured and sampled, medical staff firstly disinfect the skin to be punctured; the assistant personnel adopts B-ultrasonic to carry out assistant puncture, then the medical personnel holds the fixed tube 1 by hand, so that the needle head 21 of the outer needle tube 2 is penetrated into the skin tissue, the outer needle tube 2 and the inner needle tube 3 can reach the lesion position of the kidney part of the patient along with the continuous exertion of the medical personnel, the outer wall of the medical sealing diaphragm plate 12 jointed at the needle opening of the needle head 21 can be bonded with blood or the tissue inside the kidney, further sealing the mouth of the inner needle tube 3 in the outer needle tube 2, the medical staff rotates the rotating handle 6 at the top end of the fixed tube 1, the screwed tube 5 rotates downwards in the fixed tube 1, the rotation of the screwed tube 5 drives the spiral winding mechanism 7 to rotate, the nanofiber rope 13 can be wound on the spiral winding mechanism 7, the medical sealing membrane plate 12 can be driven to slide into the installation cavity 23 by pulling the nanofiber rope 13, and the medical sealing membrane plate 12 attached to the needle opening of the needle head 21 can be pulled to be separated; then, the downward movement of the threaded tube 5 pushes the bottom end of the inner needle tube 3 to extend out of the needle mouth of the needle head 21, so that the needle mouth of the inner needle tube 3 reaches the position of the lesion tissue, then the medical staff pulls the push rod 10 upwards, the upward suction force of the sealing plug 9 can suck the lesion tissues contacted with the needle opening of the inner needle tube 3 into the inner needle tube 3, after the sampling of the inner needle tube 3 is completed, then the medical staff rotates the rotating handle 6 reversely, the screwed pipe 5 moves upwards to drive the inner needle tube 3 to contract into the outer needle tube 2, the nanometer fiber rope 13 wound on the spiral winding mechanism 7 loosens, the restoring force of the fiber spring 14 pushes the medical sealing diaphragm plate 12 to slide downwards to be attached to the needle mouth of the needle head 21, and then can seal the interior needle tubing 3 that is located outer needle tubing 2, medical personnel take outer needle tubing 2 out slowly from the patient in vivo, and then can carry out puncture sampling operation to the kidney.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A renal biopsy sampling device comprising a stationary tube (1); the method is characterized in that: the bottom end of the fixed tube is connected with an outer needle tube (2), and an inner needle tube (3) is inserted in the outer needle tube (2) in a sliding manner; the top end of the inner needle tube (3) is rotatably connected with a threaded tube (5) through a rotating sleeve (4), and the top end of the threaded tube (5) is provided with a rotating handle (6); an internal thread disc (8) is fixedly arranged in the fixed pipe, and the internal thread disc (8) is connected with the threaded pipe (5) through internal threads; a sealing plug (9) is arranged in the inner needle tube (3), and a push rod (10) is inserted in the inner needle tube (3); the bottom end of the push rod (10) is connected to the upper end of the sealing plug (9); the bottom end of the outer needle tube (2) is provided with a needle head (21) in a subsection manner, and two sides of a needle opening at the end part of the needle head (21) are provided with sliding guide grooves (22); a sliding strip (11) is arranged in the sliding guide groove (22) in a sliding mode, and a medical sealing membrane plate (12) is installed on the outer side of the sliding strip (11); the medical sealing membrane plate (12) is attached to the needle opening of the needle head (21) in a sliding manner; an installation cavity (23) is formed in the upper side of a needle opening at the end part of the needle head (21), and the installation cavity (23) is located above the medical sealing diaphragm plate (12); the inner cavity wall of the outer needle tube (2) is provided with a sliding groove, and a nano-fiber rope (13) is arranged in the sliding groove in a sliding manner; one end of the nano-fiber rope (13) penetrates through the installation cavity (23) to be connected to the upper end of the medical sealing membrane plate (12), and the nano-fiber rope (13) is wound on the outer wall of the threaded pipe (5) through the spiral winding mechanism (7); and a fiber spring (14) is arranged in the mounting cavity (23), and the fiber spring (14) is sleeved on the nano fiber rope (13).

2. A renal biopsy sampling device according to claim 1, wherein: the spiral winding mechanism (7) comprises a sleeve (71), a rotating ring (72), a support rod (73) and a T-shaped elastic block (74); the sleeve (71) is sleeved on the threaded pipe (5), and the sleeve (71) is positioned at the bottom end of the internal thread disc (8); the bottom end of the sleeve (71) is rotatably connected with a plurality of supporting rods (73) through a rotating ring (72), and the supporting rods (73) are fixed at the bottom end of the fixed pipe (1); a T-shaped sliding groove (51) is formed in the outer side wall of the threaded pipe (5) in the vertical direction, and an annular clamping groove (52) is formed in the upper end of the T-shaped sliding groove (51); the inner wall of the sleeve (71) is provided with a T-shaped elastic block (74), and the T-shaped elastic block (74) slides up and down in the T-shaped sliding groove (51); the outer wall of the sleeve (71) is connected with a nano-fiber rope (13).

3. A renal biopsy sampling device according to claim 2, wherein: the T-shaped elastic block (74) comprises a clamping rod (741) and a pull rod (742); the clamping rod (741) is clamped in the T-shaped sliding groove (51) in a sliding mode, and an extrusion cavity is formed in the clamping rod (741); the pull rod (742) is made of hard rubber, and the pull rod (742) is connected to the inner wall of the sleeve (71).

4. A renal biopsy sampling device according to claim 3, wherein: a cavity elastic membrane column (15) is arranged between the wall of the sliding guide groove (22) and the sliding strip (11), and one end of the cavity elastic membrane column (15) is connected to the bottom groove wall of the sliding guide groove (22); the other end of the cavity elastic membrane column (15) is connected to the inner side wall of the sliding strip (11).

5. A transrenal sampling device according to claim 4, wherein: an expansion cavity (121) is formed in the inner wall of the outer ring of the medical sealing diaphragm plate, and the thickness of the outer wall of the expansion cavity (121) is larger than that of the inner wall of the expansion cavity (121); the outer wall of the top end of the cavity elastic membrane column (15) is provided with an air guide groove (151), and the air guide groove (151) penetrates through the sliding strip (11) and is communicated into the expansion cavity (121).

6. A transrenal sampling device according to claim 5, wherein: the outer wall of the medical sealing membrane plate (12) is adhered with a liquid-absorbing medical non-woven fabric (16); the inner cavity wall in the bottom of installation cavity (23) is provided with elasticity extrusion strip (17), and one side outer wall of elasticity extrusion strip (17) is the arc structure, and the opposite side of elasticity extrusion strip (17) is the toper bellying.