CN212521853U - Skin tissue drilling rotary cutter - Google Patents

Abstract

The utility model discloses a skin tissue drilling rotary-cut ware, include: skin tissue piercers and skin tissue rotary cutters; the skin tissue perforator comprises a hollow outer cylinder, and a drill knife is arranged on the edge of one end of the hollow outer cylinder; the rotary skin tissue cutter is at least partially received in the skin tissue broach; the skin tissue rotary cutter comprises a hollow inner cylinder, a loop bar and a steel wire blade, wherein the inner cylinder is at least partially received in the hollow outer cylinder, and the inner cylinder can move in and out in a reciprocating manner along the axial direction of the outer cylinder; the stem is at least partially received in the hollow inner barrel, the stem being radially rotatable relative to the inner barrel; the steel wire blade is arranged at the bottom end of the inner barrel and is connected with the loop bar through a blade transmission part; the outer side surfaces of the outer barrel, the inner barrel and the loop bar are provided with anti-skid grains. According to the utility model discloses, it has solved the problem that still must the operation excision after drilling in the traditional skin drilling biopsy art, the utility model discloses accomplish skin tissue's drilling and excision at same equipment.

Description

Skin tissue drilling rotary cutter

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a skin tissue drilling rotary cutter.

Background

In the prior art, skin biopsy is a common pathological examination means in dermatology and neurology, which means to excise or trephine skin, mucous membrane and peripheral nerve tissues at a certain position, and to make a definite diagnosis or prompt a certain diagnosis by tissue staining. Can be used for diagnosing skin tumor, viral dermatoses, bullous dermatoses, psoriasis, lichen planus, dermatoses such as leprosy, deep mycosis, and peripheral neuropathy. Skin biopsy plays a decisive role for the diagnosis of diseases. The skin nerve biopsy technique has become a reliable tool for evaluating regeneration and deletion of sensory nerve fibers in peripheral neuropathy, and is more and more widely applied to diagnosis of clinical diseases. However, biopsy is an invasive procedure and the clinician must consider the nature of the lesion, the accuracy of the diagnosis of the biopsy, and whether the cosmetic and biopsy site is affected. Skin biopsy comprises: shave biopsy, drill biopsy, excisional biopsy, wedge excisional biopsy. Excisional biopsy requires a surgeon to have a certain surgical basis and is complicated to operate. The drill biopsy operation is simple and quick to operate, easy to master, regular in specimen, small in skin trauma range, easy to operate even for doctors without surgical operation bases, and easy to receive by patients. The traditional instrument used in biopsy with bore holes is a circular drill, which is a circular knife with a diameter of 3-6mm, and is suitable for small lesions, or lesions limited to the epidermis or dermis, or cases where surgical resection is difficult. Selecting appropriate circular perforator according to different lesion parts, fixing the obtained skin with the left hand, holding the perforator with the right hand to be perpendicular to the skin surface, rotatably drilling into the skin to a certain depth, withdrawing the perforator, carefully lifting the tissue with toothed forceps, cutting off the skin tissue with a surgical knife, pressing the wound with gel sponge, and bandaging.

The conventional sampling process has a problem that surgical excision is still required after drilling with a circular drill, so that a new device is required to solve the problem.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the prior art, the utility model discloses a main objective provides a skin tissue drilling rotary cutter, and it is through setting up the skin tissue rotary cutter including steel wire blade, blade driving medium, loop bar in skin tissue drilling, and rotatory loop bar drives the aperture convergent in order to conveniently cut skin tissue of blade driving medium transmission messenger steel wire blade, will drill and amputate and accomplish at same equipment.

In order to achieve the above objects and other advantages in accordance with the present invention, there is provided a skin tissue drilling rotary cutter, comprising: comprises a skin tissue borer and a skin tissue rotary cutter;

the skin tissue perforator comprises a hollow outer cylinder, and a drill knife is arranged on the edge of one end of the hollow outer cylinder;

the rotary skin tissue cutter is at least partially received in the skin tissue broach;

the skin tissue rotary cutter comprises a hollow inner cylinder, a loop bar and a steel wire blade, wherein the inner cylinder is at least partially received in the hollow outer cylinder, and the inner cylinder can move in and out in a reciprocating manner along the axial direction of the outer cylinder;

the stem is at least partially received in the hollow inner barrel, the stem being radially rotatable relative to the inner barrel;

the steel wire blade is arranged at the bottom end of the inner barrel and is connected with the loop bar through a blade transmission part;

the outer side surfaces of the outer barrel, the inner barrel and the loop bar are provided with anti-skid grains.

Further, the inner wall edge of inner tube tip is equipped with mounting and guide A, steel wire blade one end is connected with the mounting, the other end of steel wire blade passes behind guide A and is connected with the loop bar through the blade driving medium.

Furthermore, the steel wire blade comprises a variable ring section with a variable circumference, which is positioned between the fixing part and the guide part A, the variable ring section is in a circular ring shape in an initial state and is tightly attached to the edge of the bottom end of the inner wall of the inner cylinder, and the rotating sleeve rod drives the blade transmission part to drive so that the caliber of the steel wire blade is reduced under the traction of the blade transmission part, and the circumference of the variable ring section is changed to realize rotary cutting.

Further, still include a plurality of guide B, a plurality of guide B locates the inner tube inner wall and arranges along the inner tube axial with guide A is sharp, the other end of steel wire blade passes a plurality of guide B after passing guide A and is connected with the loop bar.

Further, the inner wall of the outer barrel is provided with an internal thread, the outer wall of the inner barrel is provided with an external thread, and the outer barrel and the inner barrel are connected in a screwing mode through the internal thread and the external thread.

Furthermore, the loop bar is detachably connected with the inner cylinder in a manner that the loop bar is positioned on the inner cylinder through a plurality of positioning rings so as to limit the loop bar to move in the axial direction of the inner cylinder.

Further, the drill bit is a ring-shaped structure with an outward protruding edge.

Furthermore, scales are marked on the cut of the drill knife upwards; the joint of the inner cylinder and the outer wall of the inner cylinder are marked with scales.

Further, the wire blade is an elastic wire blade.

Furthermore, the fixing piece is detachably connected with the steel wire blade, and the steel wire blade is detachably connected with the loop bar.

The technical scheme has the following advantages or beneficial effects:

on the one hand the utility model discloses interior urceolus all has the scale, and the scale of urceolus brill sword incision department is convenient for master the brill sword and bores the degree of depth into skin, prevents to bore into too deeply, causes the unnecessary damage for the patient, and the uniformity of interior urceolus operation degree of depth is then guaranteed to the scale of inner tube external screw thread department, has ensured the accuracy nature of rotary-cut skin tissue thickness.

On one hand, the utility model solves the problem that the operation is needed to be cut after the drilling, the skin tissue rotary cutter comprising the steel wire blade, the blade transmission part and the sleeve rod is arranged in the skin tissue borer, the rotating sleeve rod drives the blade transmission part to drive the caliber of the steel wire blade to be gradually reduced so as to conveniently cut the skin tissue at the same depth with the outer barrel borer, the drilling and the cutting are completed in the same equipment, the secondary trauma and the pollution possibility of the operation are reduced, the use is convenient, and the operation is simple; the utility model discloses avoided still must destroy the problem of skin tissue easily when mentioning skin tissue with toothed forceps after the drilling in traditional drilling biopsy art, the utility model discloses the skin tissue of surely getting is more complete, the damage is littleer, has improved the accuracy and the reliability of biopsy.

The anti-skid lines outside the utility model play a role in increasing friction force, thereby preventing the slipping problem; the components of the utility model can be detachably connected, which is convenient for the disinfection after the operation, also convenient for the replacement of the damaged components and reduces the operation cost; the utility model is made of medical steel, is convenient for disinfection and can reduce the probability of operation infection.

To sum up, the utility model discloses convenient and practical, easy operation, the skin tissue of cutting is more complete, when the damage is littleer, has also reduced skin biopsy to patient's damage.

Drawings

Fig. 1 is a schematic structural view of a skin tissue drilling rotary cutter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an outer cylinder of a rotary shaver for drilling skin tissue according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an inner tube and a loop bar of a skin tissue rotary shaver according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a skin tissue drilling rotary cutter according to an embodiment of the present invention after a loop bar is screwed;

in the figure: 1-outer cylinder; 2-inner cylinder; 3-looping rods; 11-a drill; 12-graduation; 13-anti-skid lines; 14-internal screw thread; 22-graduation; 23-anti-skid lines; 24-external threads; 25A-positioning ring A; 25B-positioning ring B; 26-a fixing member; 27-guide a; 28-guide B; 31-a wire blade; 33-anti-skid lines.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

Fig. 1 to 4 show an embodiment of a skin tissue drilling rotary cutter according to the present invention. According to the utility model discloses a skin tissue drilling rotary cutter includes:

comprises a skin tissue borer and a skin tissue rotary cutter.

The skin tissue borer comprises an outer cylinder 1, wherein the lower end part of the outer cylinder 1 is a drill knife 11, and the drill knife 11 is an annular structure with an outward protruding edge, and the annular drill knife 11 is assisted to rotate, cut and bore the skin; the scales 12 with mm as a unit are arranged upwards from the incision, so that the depth from the drilling hole of the drill 11 to the skin can be conveniently mastered, unnecessary damage to a patient caused by too deep drilling can be prevented, or too shallow drilling can be prevented, the sampled skin tissue is incomplete, and the accuracy and reliability of biopsy are influenced; the inner side of the upper end of the outer barrel 1 is provided with an internal thread 14 which is used for being connected with the inner barrel 2 in a screwing way, the inner barrel and the outer barrel can be detached due to the threaded connection, the cleaning and the disinfection after the operation are convenient, and the depth of the inner barrel 2 entering the outer barrel 1 can be controlled; the outside surface of outer barrel has anti-skidding line 13, has played the effect that increases friction power, prevents the problem of skidding then.

The skin tissue rotary cutter is at least partially received in the skin tissue drill and comprises an inner cylinder 2, a loop bar 3 and a steel wire blade 31, wherein the outer side of the upper end of the inner cylinder 2 is provided with an external thread 24, the external thread 24 is in screwed connection with an internal thread 14 at the upper end of the inner side of the outer cylinder 1, and the internal and external cylinders are detachable through threaded connection, so that cleaning and disinfection after operation are facilitated; the external thread 24 is provided with a scale 22 with the unit of mm, so that the depth from the inner cylinder 2 to the skin can be conveniently mastered, the consistency of the surgical depth of the inner cylinder and the outer cylinder can be ensured, when the scale of the inner cylinder at the edge of the upper end of the outer cylinder 1 is 0mm, the bottom end of the outer cylinder 1 and the bottom end of the inner cylinder 2 are on the same horizontal plane, the larger the scale is, the inner cylinder 2 is screwed out relative to the outer cylinder 1, and the farther the plane of the bottom end of the inner; as shown in fig. 3, the outer surface of the upper end of the inner cylinder body is provided with anti-slip lines 23, the outer surface of the upper end of the loop bar 3 is provided with anti-slip lines 33, so that the function of increasing friction force is achieved, and the problem of slipping is prevented; the edge of the inner wall at the bottom end of the inner cylinder 2 is provided with a fixing piece 26 and a guide piece A27, and the inner wall further comprises a plurality of guide pieces B28, wherein the plurality of guide pieces B28 are arranged on the inner wall of the inner cylinder 2 and are arranged in a straight line with the guide piece A27 along the axial direction of the inner cylinder 2, and in a certain specific embodiment, the guide pieces B28 are arranged on the inner wall of the inner cylinder and can be of an annular structure; the fixing piece 26, the guide piece A27 and the guide piece B28 are tightly attached to the inner wall of the inner cylinder, so that the fixing piece 26, the guide piece B27 and the guide piece A28 are prevented from damaging the edge part of the skin tissue when the inner cylinder 2 enters the skin; the bottom end of the inner cylinder 2 is internally provided with a steel wire blade 31, the steel wire blade 31 is an elastic steel wire cutter, the skin tissue drilling rotary cutter completes the drilling and the rotary cutting of the skin tissue and then extracts the skin, the anti-skid grains 33 on the loop bar are rotated in the opposite direction, and the steel wire blade 31 can recover the initial state before the rotary cutting of the skin tissue, so that the steel wire blade 31 can be repeatedly utilized, and the operation cost is reduced; one end of the steel wire blade 31 is connected with the fixed part, and the other end of the steel wire blade 31 passes through the guide A27 and the plurality of guide B28 in sequence and then is connected with the bottom of the loop bar through the blade transmission part, so that the steel wire blade 31 is provided with a variable ring segment with variable circumference between the fixed part 26 and the guide A27; the fixing piece 26 is detachably connected with the steel wire blade 31, and the steel wire blade 31 is detachably connected with the loop bar 3, so that the worn steel wire blade 31 can be conveniently replaced, the main body part can be recycled, and the operation cost is reduced; in the initial state, the variable ring segment of the wire blade 31 between the fixing member 26 and the guide member a27 is in a ring shape and closely attached to the bottom edge of the inner wall of the inner cylinder 2, and the ring shape of the wire blade 31 is in the same horizontal plane with the bottom end of the inner cylinder 2, so that the bottom end of the inner cylinder 2 and the bottom end of the outer cylinder 1 are in the same horizontal plane, and the ring blade 31 and the drill 11 at the bottom end of the outer cylinder 1 are in the same horizontal plane, thereby ensuring the accuracy of the thickness of the rotary-cut skin tissue.

As shown in fig. 4, when skin tissue is cut, the anti-slip pattern 33 at the upper end of the loop bar 3 is horizontally rotated, the loop bar 3 is rotated to drive the blade driving member, the wire blade 31 is driven upwards along the blade driving member, the opening diameter of the annular wire blade 31 is gradually reduced under the traction of the blade driving member, the circumference of the variable ring segment of the wire blade 31 between the fixing member 26 and the guide member a27 is reduced to cut the base part of the skin tissue, after the loop bar 3 is completely screwed, the wire blade 31 completely cuts the base part of the skin tissue, only a small part of the wire blade 31 is connected between the fixing member 26 and the guide member a27 at the bottom end of the inner cylinder 2, and most of the remaining wire blade 31 is spirally screwed in the space between the guide member B28 and the bottom end of the loop bar 3; the loop bar 3 is located the inner tube through a plurality of holding rings, is located the inner tube through holding ring 25A, 25B in certain embodiment, avoids the axial float of loop bar 3, and the connection can be dismantled with the holding ring to inner tube 2, and the holding ring can be dismantled with loop bar 3 and be connected, and this holding ring can be the bearing, and the interior outer ring of bearing can horizontal rotation each other, and the bearing inner ring is installed on the loop bar, and the bearing outer loop is installed at the inner tube inner wall.

The outer cylinder 1, the inner cylinder 2 and the loop bar 3 are made of medical steel.

The working principle is as follows:

when the disposable skin-damage-prevention rotary-cut machine is used, medical staff select typical primary damage, select a drilling rotary-cut device with a proper aperture according to the size of required skin damage, and reversely rotate anti-skid grains on the inner cylinder to enable the inner cylinder to be screwed out of the outer cylinder, so that the scale of the thread position of the inner cylinder on the edge of the upper end of the outer cylinder is larger than 5 mm. The skin of a user who draws materials is fixed on one hand, the anti-slip veins of the outer cylinder of the other hand-held drilling rotary cutter is perpendicular to the surface of the skin of the user who draws materials, a drill knife at the lower end of the outer cylinder drill is used for downwards rotating to exert force at the material drawing part to cut and enter the skin, the depth of the drill knife entering the skin is adjusted according to the scale marks on the cut of the outer cylinder, the outer cylinder drill is stopped rotating after the certain depth is reached, the inner cylinder is slowly screwed into the outer cylinder, when the scale from the upper end edge of the outer cylinder to the scale of 0 scale at the thread part of the inner cylinder, a steel wire blade of the inner cylinder reaches the same depth as that of the outer cylinder drill knife, then a sleeve rod is rotated to drive a blade driving part so that the steel wire blade 31 upwards drives along the blade driving part, the annular steel wire blade 31 gradually reduces the aperture under the traction of, immediately put into a small bottle containing a fixing solution, the incision is sutured and aseptically bandaged.

The utility model discloses convenient and practical, easy operation, the skin tissue of cutting is more complete, when the damage is littleer, has also reduced skin biopsy to patient's damage.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. A skin tissue drilling rotary cutter is characterized in that:

comprises a skin tissue borer and a skin tissue rotary cutter;

the skin tissue perforator comprises a hollow outer cylinder (1), wherein a drill (11) is arranged on the edge of one end of the hollow outer cylinder (1);

the rotary skin tissue cutter is at least partially received in the skin tissue broach;

the skin tissue rotary cutter comprises a hollow inner cylinder (2), a loop bar (3) and a steel wire blade (31), wherein the inner cylinder (2) is at least partially received in the hollow outer cylinder (1), and the inner cylinder (2) can move in and out in a reciprocating manner along the axial direction of the outer cylinder (1);

the rod (3) is at least partially received in the hollow inner cylinder (2), the rod (3) being radially rotatable relative to the inner cylinder (2);

the steel wire blade (31) is arranged at the bottom end of the inner barrel (2), and the steel wire blade (31) is connected with the loop bar (3) through a blade transmission part;

the outer side surfaces of the outer barrel, the inner barrel and the loop bar are provided with anti-skid grains.

2. The rotary skin tissue borer of claim 1 further comprising: the inner wall border of inner tube (2) tip is equipped with mounting (26) and guide A (27), steel wire blade (31) one end is connected with mounting (26), the other end of steel wire blade (31) passes behind guide A (27) and is connected with loop bar (3) through the blade driving medium.

3. The rotary skin tissue borer of claim 1 further comprising: the steel wire blade (31) comprises a variable ring section with a variable circumference, which is positioned between the fixing piece (26) and the guide piece A (27), the variable ring section is in a circular ring shape and clings to the bottom edge of the inner wall of the inner cylinder (2) in an initial state, the rotating loop bar (3) drives the blade transmission piece to transmit, so that the caliber of the steel wire blade (31) is reduced under the traction of the blade transmission piece, and the circumference of the variable ring section is changed to realize rotary cutting.

4. The rotary skin tissue borer of claim 2 wherein: still include a plurality of guide B (28), a plurality of guide B (28) are located inner tube (2) inner wall and are arranged along inner tube (2) axial with guide A (27) alignment, the other end of steel wire blade (31) passes a plurality of guide B (28) and is connected with loop bar (3) after passing guide A (27).

5. A rotary skin tissue borer according to claim 3 wherein: the inner wall of the outer barrel (1) is provided with an internal thread (14), the outer wall of the inner barrel (2) is provided with an external thread (24), and the outer barrel (1) and the inner barrel (2) are connected in a screwing mode through the internal thread (14) and the external thread (24).

6. The rotary skin tissue borer of claim 1 further comprising: the loop bar (3) is detachably connected with the inner cylinder (2), and the loop bar (3) is positioned on the inner cylinder (2) through a plurality of positioning rings (25) to limit the loop bar (3) to move in the axial direction of the inner cylinder.

7. The rotary skin tissue borer of claim 1 further comprising: the drill (11) is a ring-shaped structure with an outward protruding edge.

8. The rotary skin tissue borer of claim 1 further comprising: the cut of the drill (11) is marked with scales (12) upwards; scales (22) are marked on the joint of the inner cylinder (2) and the outer cylinder (1) and the outer wall of the inner cylinder (2).

9. The rotary skin tissue borer of claim 1 further comprising: the wire blade (31) is an elastic wire blade.

10. The rotary skin tissue borer of claim 2 wherein: the fixing piece (26) is detachably connected with the steel wire blade (31), and the steel wire blade (31) is detachably connected with the loop bar (3).

Images