CN115670531B

CN115670531B - Skin biopsy sampler with adjustable

Info

Publication number: CN115670531B
Application number: CN202211131374.8A
Authority: CN
Inventors: 赵娇; 林烨; 管维平; 李雪梅; 赵恒利; 孙慧; 尹春宇
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-08-01
Anticipated expiration: 2042-09-16
Also published as: CN115670531A

Abstract

The invention provides an adjustable skin biopsy sampler, belonging to the technical field of medical appliances; the novel knife blade comprises a barrel body and two blades, wherein a supporting part for supporting the blades is arranged on the barrel body, a first adjusting part for adjusting the distance between the two blades is arranged on the supporting part, and a first limiting part for limiting the supporting part and a second limiting part for limiting the first adjusting part are arranged on the barrel body. According to the invention, the first adjusting component and the second adjusting component are arranged, and the adjustment of the distance between the two blades and the limit of the feeding depth are completed under the cooperation of the first measuring component and the second measuring component, so that the adaptability of the device to different patients is improved, the increase of the purchase cost of the trephine caused by different sampling areas and sampling depths is reduced, the treatment cost and waiting time of the patients are reduced, the wound of the device on the patient with lighter illness state in the use process is lightened, and the rehabilitation efficiency of the patient is ensured.

Description

Skin biopsy sampler with adjustable

Technical Field

The invention relates to the technical field of medical appliances, in particular to an adjustable skin biopsy sampler.

Background

Skin biopsy is a traumatic clinical examination, and the final purpose of clear clinical diagnosis or treatment is achieved by taking local materials of lesions of skin diseases and performing histopathological examination. The skin is not a thin layer which we imagine, but a three-dimensional structure, and contains many accessory tissues such as hair follicles, sweat glands, blood vessels, etc. Skin diseases are all caused by lesions of these structures. However, these structures are microscopic structures and are not visible to the naked eye, and the tissue is cut under a microscope to find the specific condition of the lesion.

The most common method in clinic is trephine biopsy at present, because the damage is small and a certain cutting depth can be achieved. Trephine biopsy is performed with a hollow circular scalpel to cut lesions in the skin. The trephine is rotated clockwise and counterclockwise to cut the skin approximately 4 mm thick to the adipose tissue layer below the dermis layer. The dissected tissue samples were then removed and examined under a microscope.

The area and the depth of lesion skin of different patients are different due to the difference of disease types and personal physical quality, and the trephine used in the prior art means has a plurality of models, but has a fixed size due to the trephine operation incision and a fixed reserved depth of the cutting opening, so that the suitability of patients with different diseases is greatly reduced when the patients are cut on the skin.

Disclosure of Invention

The invention aims to solve the technical problems that the adjustable skin biopsy sampler is provided to solve the problems that the existing trephine is fixed in size and low in suitability for patients with different illness states, a plurality of trephines with different model specifications are needed to be purchased, the treatment cost and waiting time of the patients are increased, and the reserved depths of the cutting openings of the trephine with different model specifications are mostly consistent, so that the adjustable skin biopsy sampler can cause larger wounds for the patients with lighter illness states in the use process, and the rehabilitation efficiency of the patients is affected.

In order to solve the technical problems, the invention provides the following technical scheme:

the adjustable skin biopsy sampler comprises a barrel and two blades, wherein a supporting part for supporting the blades is arranged on the barrel, a first adjusting part for adjusting the distance between the two blades is arranged on the supporting part, a first limiting part for limiting the supporting part and a second limiting part for limiting the first adjusting part are arranged on the barrel, a first measuring part for measuring the distance between the blades and the axis of the barrel is arranged on the first adjusting part, and a second measuring part for measuring the displacement distance of the second limiting part is arranged on the second limiting part; the support component includes with the first slide bar of barrel slip cup joint, first adjusting part include with the fixed polished rod that cup joints of first slide bar, with the two-way screw rod that first slide bar rotated the cup joint, slide on the polished rod and cup jointed two splint, splint with two-way screw rod pass through threaded connection, the one end fixedly connected with knob of two-way screw rod, the second spout has been seted up on the barrel, two-way screw rod runs through the second spout, the knob is located outside the barrel, splint with blade fixed connection.

Preferably, the supporting component further comprises a first ratchet plate fixedly sleeved on the first sliding rod, a first spring is fixedly connected to the top of the first ratchet plate, one end, away from the first ratchet plate, of the first spring is fixedly connected with the cylinder body, the first ratchet plate is in sliding connection with one side inner wall of the cylinder body, two limiting rods are fixedly connected in the cylinder body, and the limiting rods are in abutting contact with the first ratchet plate.

Preferably, the first limiting component comprises a first fixing sleeve fixedly connected to the cylinder body, the first fixing sleeve penetrates through and extends into the cylinder body, a first fixing plate is fixedly connected to the first fixing sleeve, a second sliding rod is sleeved on the first fixing plate in a sliding mode, a second ratchet plate is fixedly connected to one end of the second sliding rod, a second spring is fixedly connected to one side of the first fixing plate, the second spring is sleeved with the second sliding rod, one side, away from the first fixing plate, of the second spring is fixedly connected with the second ratchet plate, the second sliding rod penetrates through the first fixing plate and extends out of the cylinder body, and the second ratchet plate is meshed with the first ratchet plate.

Preferably, the first fixing sleeve is abutted against one side of the first ratchet plate, on which the tooth grooves are formed.

Preferably, first sliding grooves are formed in two opposite sides of the cylinder body, and limiting ratchet grooves are formed in two sides of the first sliding grooves.

Preferably, the second limiting component comprises a first sliding ring sleeved in the cylinder in a sliding manner, a limiting groove is formed in the first sliding ring, the polished rod is abutted to the inner wall of the bottom of the limiting groove, two elastic connecting pieces are fixedly connected to the first sliding ring, a clamping block is fixedly connected to one end, away from the first sliding ring, of each elastic connecting piece, and the clamping block is clamped with the limiting ratchet groove.

Preferably, two scales are arranged on the cylinder body, and a second chute penetrating through the cylinder body is formed in the cylinder body.

Preferably, the first measuring part comprises two third sliding rods which are in sliding connection with one clamping plate, the tops of the two third sliding rods are fixedly connected with the same first connecting rod, one side of the first connecting rod is fixedly connected with a second pointing block, the second pointing block points to one scale, and the first connecting rod is in sliding sleeve joint with the second sliding groove.

Preferably, the second measuring component comprises a connecting ring fixedly connected with the two clamping blocks, a connecting frame is fixedly connected to the connecting ring, two first pointing blocks are fixedly connected to the inner walls of the two sides of the connecting frame, and the two first pointing blocks point to the other scale.

Preferably, one side of the cylinder is fixedly connected with two first jackets, a first through groove is formed in each first jacket, and the connecting ring is in sliding sleeve joint with the first through groove.

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

in the above-mentioned scheme, through setting up first adjusting part and second adjusting part, accomplish the regulation of two blade intervals and the spacing of feed degree of depth under the cooperation of first measuring part and second measuring part to improve the suitability of this device to different diseases, reduce the trephine purchase cost increase because of sampling area and sampling degree of depth are different results in, reduced the treatment cost and the latency of disease and alleviate the wound that this device caused the lighter patient of state of illness in the use, ensure patient's recovered efficiency.

Through setting up fixture block and spacing ratchet tooth's socket, press two and press the handle, and upwards extrude and carry and draw two and press the handle, make fixture block and spacing ratchet tooth's socket to break away from the joint, two pressure handles of downwardly moving afterwards, press the handle through the elastic connection piece, drive first sliding ring and slide downwards, observe the displacement distance of first sliding ring through the second measurement part, with the regulation precision of supplementary first sliding ring guarantee first sliding ring, after first sliding ring moves to predetermined height, can loosen the extrusion to pressing the handle, under the elasticity effect of elastic connection piece, fixture block and spacing ratchet tooth's socket joint, accomplish the spacing of first sliding ring through the elastic connection piece, and a structure is simple, the simple operation.

Through setting up first spacing part, after accomplishing the spacing adjustment of blade and the high regulation of second spacing part, place the barrel perpendicular to skin and push down, push down first slide bar simultaneously, first slide bar drives first ratchet board down motion, and extrude the tooth piece on the second ratchet board through tooth cell wall, make second ratchet board atress drive second slide bar remove, simultaneously first slide bar still drives the blade through the polished rod, two-way screw rod, splint, the blade of downshifting cuts into the skin of disease, when the polished rod of downshifting is unable under the interference of spacing groove, stop pushing down first slide bar, under the pulling force effect of first spring, first ratchet board has the trend of upward movement, under the spacing effect of second ratchet board with first ratchet board meshing, first ratchet board is spacing in current position, and through first slide bar, the polished rod, two-way screw rod, splint make the blade spacing in current position, immediately regard the axle center of barrel as the rotation axle center, and rotate multiturn according to blade and barrel bottom open-ended tangential direction, make the blade follow the annular affected part of barrel skin motion, thereby the annular operation of the edge of drum is accomplished, the operation is simple, and convenient.

Limiting grooves are arranged to limit the optical rod, and then the sampling depth of the blade connected with the optical rod through the clamping plates is limited, so that the trauma of the device to a patient with lighter illness state in the use process is reduced, and the rehabilitation efficiency of the patient is guaranteed.

The first sliding rod is prevented from relatively deflecting with the cylinder through the polished rod, the bidirectional screw rod and the clamping plate in the rotation process of the cylinder through the interference of the first fixed sleeve and the first ratchet plate and the sliding connection of the cylinder and the first ratchet plate, so that the cutting effect of the blade is influenced.

Through setting up first measurement component, can drive the second through third slide bar, head rod and instruct the piece to remove when splint remove, point portion instruction position through the second point to instruct the piece and scale on the barrel carries out real-time measurement to the axle center interval of splint and barrel to guarantee the regulation precision of the interval with two blades of two splint fixed connection, the area of the breach after the guarantee is cut through the blade is approximate with anticipated breach area, improve the adaptation effect to different sick affected parts, through two third slide bars with splint sliding connection, cause the interference to the splint when avoiding splint to move down, still ensured the measuring effect of second point piece simultaneously.

Through setting up the second and measure the part, when the fixture block removes, can drive first directional piece through go-between, connecting frame and remove, carry out real-time measurement to the adjustment height of first sliding ring through the scale on first directional piece point portion instruction position and the barrel to the high regulation precision of first sliding ring of guarantee, guarantee the spacing effect to blade depth of cut reduces the cutting wound degree of depth to the patient.

Through seting up first logical groove, avoid interfering with the go-between in the motion process, influence the motion of go-between, thereby influence the measurement effect of the first directional piece of being connected through the carriage with the go-between, reduce the accuracy of the high regulation of first sliding ring, protect the knob of slip in-process through setting up first sheath, avoid the knob to be touched by mistake in the slip in-process, thereby lead to two-way screw to rotate and make splint skew, influence the integrality of cutting breach, reduce the cutting effect, increase the sample degree of difficulty.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 is a schematic perspective view of an adjustable skin biopsy sampler at a first view angle;

FIG. 2 is a schematic view of a second perspective view of the adjustable skin biopsy sampler;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

FIG. 4 is a schematic view of a partially cut-away perspective view of an adjustable skin biopsy sampler;

FIG. 5 is an enlarged schematic view of the structure of FIG. 4B;

FIG. 6 is a schematic view of a part of the enlarged structure of FIG. 4;

fig. 7 is a schematic diagram of an assembled three-dimensional enlarged structure of the second limiting component and the second measuring component.

[ reference numerals ]

1. A cylinder; 2. a blade; 3. a support member; 4. a first adjusting member; 5. a first limiting member; 6. A second limiting member; 7. a first measurement component; 8. a second measurement part; 9. a first slide bar; 10. a first ratchet plate; 11. a first spring; 12. a polish rod; 13. a bidirectional screw; 14. a knob; 15. a clamping plate; 16. A first fixed sleeve; 17. a first fixing plate; 18. a second slide bar; 19. a second spring; 20. a second ratchet plate; 21. a first slip ring; 22. a limit groove; 23. a clamping block; 24. a connecting ring; 25. a connection frame; 26. A first pointing block; 27. a first sheath; 28. a first chute; 29. a third slide bar; 30. a first connecting rod; 31. a second instruction block; 32. a second chute; 33. a first through groove; 34. limiting ratchet grooves; 35. an elastic connecting piece; 36. and a limit rod.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

An adjustable skin biopsy sampler provided by the present invention is described in detail below with reference to the drawings and specific examples. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.

It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.

As shown in fig. 1-4 and 6, an embodiment of the present invention provides an adjustable skin biopsy sampler, which comprises a barrel 1 and two blades 2, wherein a supporting part 3 for supporting the blades 2 is installed on the barrel 1, a first adjusting part 4 for adjusting the distance between the two blades 2 is installed on the supporting part 3, a first limiting part 5 for limiting the supporting part 3 and a second limiting part 6 for limiting the first adjusting part 4 are installed on the barrel 1, a first measuring part 7 for measuring the distance between the blades 2 and the axis of the barrel 1 is installed on the first adjusting part 4, and a second measuring part 8 for measuring the displacement distance of the second limiting part 6 is installed on the second limiting part 6; the support part 3 comprises a first slide bar 9 which is in sliding sleeve joint with the cylinder body 1, the first adjusting part 4 comprises a polished rod 12 which is fixedly sleeved with the first slide bar 9 and a bidirectional screw rod 13 which is in rotating sleeve joint with the first slide bar 9, two clamping plates 15 are in sliding sleeve joint on the polished rod 12, the clamping plates 15 are in threaded connection with the bidirectional screw rod 13, one end of the bidirectional screw rod 13 is fixedly connected with a knob 14, a second sliding groove 32 is formed in the cylinder body 1, the bidirectional screw rod 13 penetrates through the second sliding groove 32, the knob 14 is positioned outside the cylinder body 1, and the clamping plates 15 are fixedly connected with the blade 2.

Before sampling, rotate knob 14, knob 14 drives bi-directional screw 13 and rotates, and drive two splint 15 and be close to each other or keep away from each other under polished rod 12's restriction, and then adjust the interval of two blades 2, can observe the distance with barrel 1 axle center of blade 2 after adjusting through first measuring part 7, then adjust the spacing height of second limiting part 6, can observe the spacing height of adjusting back second limiting part 6 through second measuring part 8, accomplish the spacing height of second limiting part 6 and the regulation of two blade 2 intervals under the cooperation of first measuring part 7 and second measuring part 8, in order to improve the suitability of this device to different diseases, reduce the trephine purchase cost increase because of sample area and sampling depth are different, the treatment cost and the latency of disease have been reduced, limit the sampling depth of blade 2 through second limiting part 6, reduce the patient's that alleviates the state of an illness and cause in the use, guarantee patient's recovered efficiency.

As shown in fig. 4 and 5, in this embodiment, the supporting member 3 further includes a first ratchet plate 10 fixedly sleeved on the first slide rod 9, a first spring 11 is fixedly connected to the top of the first ratchet plate 10, one end of the first spring 11 away from the first ratchet plate 10 is fixedly connected with the cylinder 1, the first ratchet plate 10 is slidably connected with an inner wall of one side of the cylinder 1, two limiting rods 36 are fixedly connected in the cylinder 1, and the limiting rods 36 are in contact with the first ratchet plate 10.

Through setting up first spring 11, gag lever post 36, first spring 11 under the normality is through pulling force pulling first ratchet board 10 to carry out spacingly to first ratchet board 10 under the conflict of gag lever post 36 and first ratchet board 10, and then carry out spacingly to blade 2 through first slide bar 9, polished rod 12, bi-directional screw 13, splint 15, avoid blade 2 to expose outside barrel 1, cause the pollution of blade 2 or cause the damage to medical personnel.

As shown in fig. 4-7, in this embodiment, the first limiting component 5 includes a first fixing sleeve 16 fixedly connected to the cylinder 1, the first fixing sleeve 16 penetrates through and extends into the cylinder 1, a first fixing plate 17 is fixedly connected to the first fixing sleeve 16, a second slide bar 18 is sleeved on the first fixing plate 17 in a sliding manner, a second ratchet plate 20 is fixedly connected to one end of the second slide bar 18, a second spring 19 is fixedly connected to one side of the first fixing plate 17, the second spring 19 is sleeved with the second slide bar 18, one side of the second spring 19 away from the first fixing plate 17 is fixedly connected with the second ratchet plate 20, the second slide bar 18 penetrates through the first fixing plate 17 and extends out of the cylinder 1, the second ratchet plate 20 is meshed with the first ratchet plate 10, first sliding grooves 28 are formed in two opposite sides of the cylinder 1, limiting ratchet grooves 34 are formed in two sides of the first sliding grooves 28, the second limiting component 6 includes a first slip ring 21 sleeved in the cylinder 1 in a sliding manner, a limiting groove 22 is formed in the first slip ring 21 in a sliding manner, one side of the first slip ring 21 is fixedly connected with a second spring 19 in a sleeved manner, one side of the second spring 19 away from the first sliding ring 21 is fixedly connected with the second ratchet plate 20, the second spring 19 is fixedly connected with the second ratchet plate 20, the second sliding groove is meshed with the first connecting piece 35 is fixedly connected with the first connecting piece 23, and the first connecting piece 23 is fixedly connected with the first connecting piece 23, and the second connecting piece is kept away from the first connecting piece 35.

The specific adjustment steps of the second limiting component 6 are as follows: the two pressing handles are pressed, the two pressing handles are pressed upwards and lifted, the clamping block 23 is separated from the limiting ratchet slot 34 and then moves downwards, the pressing handles slide downwards through the elastic connecting sheet 35 to drive the first sliding ring 21, the displacement distance of the first sliding ring 21 is observed through the second measuring component 8, the first sliding ring 21 is assisted to ensure the adjustment precision of the first sliding ring 21, after the first sliding ring 21 moves to a preset height, the pressing handles can be loosened, the clamping block 23 is clamped with the limiting ratchet slot 34 under the elastic action of the elastic connecting sheet 35, the limiting of the first sliding ring 21 is completed through the elastic connecting sheet 35, and the device is simple in structure and convenient to operate.

Through setting up first spacing part 5, after the spacing adjustment of blade 2 and the high regulation of second spacing part 6 are accomplished, lead to intradennal wind group with anesthetic, stabilize skin thumb and forefinger, slightly perpendicular to normal skin tensile tension line, so that produce oval incision, be convenient for sew up, place barrel 1 perpendicular to skin and push down, push down first slide bar 9 simultaneously, first slide bar 9 drives first ratchet plate 10 down motion, and extrude the tooth piece on the second ratchet plate 20 through the tooth cell wall, make second ratchet plate 20 atress drive second slide bar 18 remove, simultaneously first slide bar 9 still passes through polished rod 12, bi-directional screw 13, splint 15 drive blade 2 downwardly moving, the blade 2 of downwardly moving cuts into the skin of disease, when the polished rod 12 of lower moving is unable to move under the conflict of spacing groove 22, stop pushing down first slide bar 9, under the pulling force effect of first spring 11, under the spacing effect of second ratchet plate 20 with first ratchet plate 10 meshing, first ratchet plate 10 is in the spacing effect of first ratchet plate 10, and the current position of blade 1, the tip is at the edge of a knife 1, and the axial center of cut-off is realized at the axial center of the annular groove 1, tip 1 is cut through the axial center of cut-off, tip 1 is realized at the axial center of cut-down, tip 1 is realized at the axial center position is cut at the axial center of the current position is cut, tip 1 is cut at the axial center is easy, tip 1 is cut at the bottom of the axial center is cut is completely cut, tip is realized to the axial position is easy, and is convenient to be cut at the axial center 1 or is convenient to cut at the axial center is easy to cut edge 1, and is easy is convenient to rotate axial position is easy to cut and is easy to cut.

The polish rod 12 is limited by the limiting groove 22, so that the sampling depth of the blade 2 connected with the polish rod 12 through the clamping plate 15 is limited, the trauma to a patient with lighter illness state in the using process of the device is reduced, and the rehabilitation efficiency of the patient is guaranteed.

As shown in fig. 5, in this embodiment, the first fixing sleeve 16 abuts against the side of the first ratchet plate 10 with the tooth slot, and the abutting of the first fixing sleeve 16 against the first ratchet plate 10 and the sliding connection between the cylinder 1 and the first ratchet plate 10 prevent the cylinder 1 from relatively deflecting the first slide rod 9 and the cylinder 1 in the rotation process, which affects the cutting effect of the blade 2, by driving the blade 2 through the polished rod 12, the bidirectional screw 13 and the clamping plate 15.

As shown in fig. 6, in this embodiment, two scales (not shown in the drawing) are provided on the cylinder 1, a second chute 32 penetrating through the cylinder 1 is provided on the cylinder 1, the first measuring component 7 includes two third slide bars 29 slidably connected with one of the clamping plates 15, the top parts of the two third slide bars 29 are fixedly connected with the same first connecting rod 30, one side of the first connecting rod 30 is fixedly connected with a second pointing block 31, the second pointing block 31 points to one of the scales, and the first connecting rod 30 is slidably sleeved with the second chute 32.

Through setting up first measuring part 7, can drive the second through third slide bar 29, head rod 30 and instruct piece 31 and remove when splint 15 remove, point portion instruction position through second instruct piece 31 and the scale on barrel 1 carry out real-time measurement to splint 15 and barrel 1's axle center interval, with the regulation precision of the interval of two blades 2 of guarantee and two splint 15 fixed connection, the area of the breach after the guarantee is cut through blade 2 is similar with anticipated breach area, improve the adaptation effect to different sick affected parts, through two third slide bars 29 with splint 15 sliding connection, cause the interference to splint 15 when avoiding splint 15 to move down, still ensured the measuring effect of second instruct piece 31 simultaneously.

As shown in fig. 7, in this embodiment, the second measuring component 8 includes a connection ring 24 fixedly connected with two clamping blocks 23, a connection frame 25 is fixedly connected to the connection ring 24, two first pointing blocks 26 are fixedly connected to inner walls of two sides of the connection frame 25, and the two first pointing blocks 26 point to the other scale.

Through setting up second measurement element 8, when fixture block 23 removes, can drive first directional piece 26 through go-between 24, connecting frame 25 and remove, carry out real-time measurement to the adjustment height of first sliding ring 21 through the scale on first directional piece 26 point portion instruction position and the barrel 1 to the adjustment accuracy of the height of first sliding ring 21 is ensured, the spacing effect of guarantee cutting depth to blade 2 reduces the cutting wound degree of depth to the patient.

As shown in fig. 6 and 7, in this embodiment, two first sheaths 27 are fixedly connected to one side of the cylinder 1, a first through groove 33 is formed in the first sheaths 27, the connecting ring 24 is in sliding sleeve connection with the first through groove 33, interference with the connecting ring 24 in the moving process is avoided by forming the first through groove 33, movement of the connecting ring 24 is affected, measurement effect of the first pointing block 26 connected with the connecting ring 24 through the connecting frame 25 is affected, accuracy of height adjustment of the first sliding ring 21 is reduced, the knob 14 in the sliding process is protected by setting the first sheaths 27, error touching of the knob 14 in the sliding process is avoided, rotation of the bidirectional screw 13 is caused, so that the clamping plate 15 is offset, integrity of a cutting notch is affected, cutting effect is reduced, and sampling difficulty is increased.

According to the technical scheme, before sampling, the knob is rotated to drive the bidirectional screw to rotate, the two clamping plates are driven to be close to or far away from each other under the limit of the polished rod, the distance between the two blades and the axis of the cylinder body can be adjusted through the first measuring part, the distance between the adjusted blades and the axis of the cylinder body can be observed, the limiting height of the second limiting part can be adjusted through the second measuring part, the limiting height of the second limiting part after adjustment can be observed through the second measuring part, and the adjustment of the limiting height of the second limiting part and the distance between the two blades can be completed under the cooperation of the first measuring part and the second measuring part, so that the suitability of the device for different patients is improved, the increase of trephine purchase cost caused by different sampling areas and sampling depths is reduced, the treatment cost and the waiting time of the patients are reduced, the sampling depth of the blades is limited through the second limiting part, the trauma caused to the lighter patients in the using process is reduced, and the rehabilitation efficiency of the patients is ensured.

Through setting up first spring, gag lever post, first spring passes through pulling force pulling first ratchet board under the normality to carry out spacingly to first ratchet board under the conflict of gag lever post and first ratchet board, and then carry out spacingly to the blade through first slide bar, polished rod, two-way screw rod, splint, avoid the blade to expose outside the barrel, cause the pollution of blade or cause the damage to medical personnel.

Through setting up first spacing part, after the spacing adjustment of completion blade and the high regulation of second spacing part, lead intradennal fan group with anesthetic, stabilize skin thumb and forefinger, a little perpendicular to normal skin tensile tension line, so that produce oval incision, be convenient for sew up, place barrel perpendicular to skin and push down, push down first slide bar simultaneously, first slide bar drives first ratchet board downstream, and extrude the tooth piece on the second ratchet board through the tooth cell wall, make second ratchet board atress drive second slide bar remove, simultaneously first slide bar still moves down through the polished rod, two-way screw rod, splint drive the blade, the blade of downwarping that moves cuts into the skin of disease, when the polished rod that moves down is unable to move under the conflict in spacing groove, first slide bar stops to push down, under the pulling force effect of first spring, first ratchet board has the trend of upward movement, under the spacing effect of second ratchet board with first ratchet board meshing, first ratchet board is spacing in current position, and pass through first polished rod, two-way screw rod, splint make the blade spacing in current position at the tooth board, make the blade at current position, make the tip of edge of a knife, and remove the tip in the axial center of a knife at the bottom of a knife edge, and the cylinder is cut through the annular cutting device, thereby the bottom is accomplished along the axial center of the cylinder, the cutting edge of a knife edge, the cylinder is convenient, the bottom is cut, the cylinder is cut, the bottom is convenient, the edge is cut, the bottom is cut, the edge is cut and is convenient, the edge is cut, the bottom is easy, the edge is cut has the edge is cut.

The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the embodiments described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as: ROM/RAM, magnetic disks, optical disks, etc.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. An adjustable skin biopsy sampler, comprising: the device comprises a cylinder body and two blades, wherein a supporting part for supporting the blades is arranged on the cylinder body, a first adjusting part for adjusting the distance between the two blades is arranged on the supporting part, a first limiting part for limiting the supporting part and a second limiting part for limiting the first adjusting part are arranged on the cylinder body, a first measuring part for measuring the distance between the blades and the axis of the cylinder body is arranged on the first adjusting part, and a second measuring part for measuring the displacement distance of the second limiting part is arranged on the second limiting part;

the supporting component comprises a first sliding rod which is in sliding sleeve joint with the cylinder body, the first adjusting component comprises a polished rod which is fixedly sleeved with the first sliding rod and a bidirectional screw rod which is in rotating sleeve joint with the first sliding rod, two clamping plates are in sliding sleeve joint on the polished rod, the clamping plates are in threaded connection with the bidirectional screw rod, one end of the bidirectional screw rod is fixedly connected with a knob, a second sliding groove is formed in the cylinder body, the bidirectional screw rod penetrates through the second sliding groove, the knob is positioned outside the cylinder body, and the clamping plates are fixedly connected with the blade;

the supporting component further comprises a first ratchet plate fixedly sleeved on the first sliding rod, a first spring is fixedly connected to the top of the first ratchet plate, one end, away from the first ratchet plate, of the first spring is fixedly connected with the cylinder body, the first ratchet plate is slidably connected with the inner wall of one side of the cylinder body, two limiting rods are fixedly connected in the cylinder body, and the limiting rods are in contact with the first ratchet plate;

the first limiting component comprises a first fixing sleeve fixedly connected to the cylinder body, the first fixing sleeve penetrates through and extends to the inside of the cylinder body, a first fixing plate is fixedly connected to the inside of the first fixing sleeve, a second sliding rod is sleeved on the first fixing plate in a sliding mode, a second ratchet plate is fixedly connected to one end of the second sliding rod, a second spring is fixedly connected to one side of the first fixing plate, the second spring is sleeved with the second sliding rod, one side of the second spring away from the first fixing plate is fixedly connected with the second ratchet plate, the second sliding rod penetrates through the first fixing plate and extends to the outside of the cylinder body, and the second ratchet plate is meshed with the first ratchet plate.

2. The adjustable skin biopsy sampler of claim 1, wherein the first fixation sleeve abuts a side of the first ratchet plate where the splines are formed.

3. The adjustable skin biopsy sampler of claim 1, wherein first sliding grooves are formed in two opposite sides of the cylinder body, and limiting ratchet grooves are formed in two sides of the first sliding grooves.

4. The adjustable skin biopsy sampler of claim 3, wherein the second limiting component comprises a first slip ring sleeved in the cylinder in a sliding manner, a limiting groove is formed in the first slip ring, the polish rod is abutted against the inner wall of the bottom of the limiting groove, two elastic connecting pieces are fixedly connected to the first slip ring, a clamping block is fixedly connected to one end, away from the first slip ring, of the elastic connecting pieces, and the clamping block is clamped with the limiting ratchet groove.

5. The adjustable skin biopsy sampler of claim 1, wherein the barrel is provided with two graduations, and the barrel is provided with a second chute penetrating the barrel.

6. The adjustable skin biopsy sampler of claim 1, wherein the first measuring component comprises two third sliding rods which are in sliding connection with one of the clamping plates, the tops of the two third sliding rods are fixedly connected with a same first connecting rod, one side of the first connecting rod is fixedly connected with a second pointing block, the second pointing block points to one scale, and the first connecting rod is in sliding sleeve connection with the second sliding groove.

7. The adjustable skin biopsy sampler of claim 1, wherein the second measurement component comprises a connecting ring fixedly connected with two clamping blocks, a connecting frame is fixedly connected to the connecting ring, two first pointing blocks are fixedly connected to inner walls of two sides of the connecting frame, and the two first pointing blocks point to the other scale.

8. The adjustable skin biopsy sampler of claim 7, wherein one side of the cylinder is fixedly connected with two first jackets, a first through groove is formed in each first jacket, and the connecting ring is in sliding sleeve connection with the first through groove.