CN205658933U - Trephine - Google Patents

Abstract

The utility model provides a trephine which includes: bore the body and key, the key insert dismountablely in bore the first through -hole that body middle part formed, still include the sleeve pipe, the sleeve pipe middle part is formed with the second through -hole, and the sleeve pipe is formed with rotatable dog in the bottom around its periphery, the sheathed tube internal surface is formed with the internal thread, bore the body hold in in the second through -hole, the outside of the brill body is prolonged it and vertically is provided with the scale mark, the surface that bores the body is formed with the external screw thread to with sheathed tube inner thread meshed, the rotatory brill of accessible is personally experienced sth. Part of the body and is adjusted the length that the circular cutting sword that bores body bottom extends the bottom surface of sheathed tube dog, when the bottom surface of the circular cutting sword that bores body bottom and dog flushed, the sheathed tube top surface alignd with the zero graduation of scale mark, when the circular cutting sword that bores body bottom extends the bottom surface of sheathed tube dog, the length of its extension can by scale mark and sheathed tube top surface align the scale interval to be reflected.

Description

Trepan

Technical field

This utility model relates to a kind of medical apparatus and instruments, particularly relates to a kind of trepan.

Background technology

There is important value in skin histopathology to dermopathic diagnosis, meanwhile, to understand disease generation, develop, lapse to, Body general body state and the selection to Therapeutic Method are the most significant.Want to obtain and be worth higher pathological picture, it is necessary to There is regular specimen.Conventional method has trepan method.It is the most normal that trepan (as shown in a, b, c in Fig. 1) is that department of dermatologry takes pathology sample One of instrument, this trepan includes drill body and key, and key is removably insertable in drill body.The bottom of drill body is ring cutting Cutter.During sampling, take out key, get into patient's subcutaneous tissue desired depth after drill body is propped up the skin of patient, then take off ring Bore, clamp sample with tweezers, cut sample with knife or shears at fat deposit, then key is inserted in drill body in case stop ring is cut Cutter deforms.Owing to there is no scale on circular cutter, make sampling depth wayward, as the degree of depth is inadequate, can cause and draw materials unsuccessfully, need At sampled point periphery resampling, add the misery of patient.Therefore, existing trepan is the highest to the skill requirement of user.

Utility model content

In view of the above problems, this utility model is directed to a kind of trepan, and it can control sampling depth exactly.

A kind of trepan of the present utility model, comprising: drill body and key, key is removably insertable in the middle part of described drill body The first through hole formed；Trepan farther includes sleeve pipe, is formed with the second through hole in the middle part of sleeve pipe, sleeve pipe in bottom around its periphery shape Become to have block；The inner surface of sleeve pipe is formed with female thread；Described drill body is contained in described second through hole；The outside of described drill body Prolong it and be vertically arranged with graduation mark；The outer surface of drill body is formed with external screw thread, engages with the female thread with sleeve pipe；Can be by rotating Drill body and adjust the length of bottom surface that the circular cutter of drill body bottom extends the block of sleeve pipe；Circular cutter and gear when drill body bottom When the bottom surface of block flushes, the end face of sleeve pipe aligns with the zero graduation of graduation mark；When the circular cutter of drill body bottom extends sleeve pipe During the bottom surface of block, its length extended can be reflected by described graduation mark scale value of aliging with the end face of sleeve pipe.

Preferably, described block is formed as transparent.

Owing to trepan of the present utility model adds sleeve pipe on the basis of existing trepan, scale is set outside drill body, logical Extend the length of block of sleeve pipe insert the degree of depth of patient tissue to the circular cutter limiting drill body after arranging drill body in advance, it is ensured that The degree of depth of every sub-sampling, reduces the sampling skill requirement to operator.

Accompanying drawing explanation

Fig. 1 is existing trepan；

Fig. 2 is trepan of the present utility model；

Fig. 3 is that the trepan of Fig. 2 takes out the schematic diagram preparing sampling after key；

Fig. 4 is the schematic cross-section of the sleeve pipe of Fig. 2；

Fig. 5 is the schematic cross-section of the drill body of Fig. 2；

Fig. 6 is the schematic diagram of the key of Fig. 2.

Detailed description of the invention

Below, by Figure of description 2-6, trepan of the present utility model is described in detail.

Trepan of the present utility model, comprising: drill body 20, key 30, sleeve pipe 10.

Key 30 is removably insertable into the first through hole 21 formed in the middle part of drill body 20.

Being formed with the second through hole 11 in the middle part of sleeve pipe 10, sleeve pipe 10 is formed with rotatable block 12 in bottom around its periphery. Block 12 owing to being rotatable, when carrying out ring cutting operation block can with skin surface contact and keep relative quiet Only, so, sleeve pipe 10 rotates together with drill body 20, from the length extending sleeve pipe 10 without changing drill body 20.Sleeve pipe 10 Inner surface is formed with female thread.

Drill body 20 is contained in the second through hole 11.The outside of drill body 20 is prolonged it and is vertically arranged with graduation mark 24.

The outer surface of drill body 20 is formed with external screw thread, engages with the female thread with sleeve pipe 10.

The bottom surface that the circular cutter 23 of drill body 10 bottom extends the block 12 of sleeve pipe 10 can be adjusted by rotating drill body 20 Length.When the circular cutter 23 of drill body 20 bottom flushes with the bottom surface of block 12, the end face of sleeve pipe 10 and the zero of graduation mark 24 Scale aligns.When the circular cutter 23 of drill body 20 bottom extends the bottom surface of block 12 of sleeve pipe, its length extended can be by carving Scale value of degree line 24 aliging with the end face of sleeve pipe 10 reflects.Block 12 is formed as transparent.

Key 30 avoids deformation mainly for the protection of circular cutter 23.Key top is formed with boss 32, and it corresponds to sleeve pipe The round platform spatial portion 22 of 20, with spacing key 30, key 30 top is formed with handle 31, is taken off to facilitate.

During use, first taking off key 30, then regulation drill body 20 extends the length of sleeve pipe 10 to predetermined length.To bore The circular cutter of body is directed at position to be sampled, and the upper end of user operation drill body 20 carries out rotary-cut until block 12 is against patient skin Surface, terminates rotary-cut, removes trepan, take off by the sample of ring cutting with cutter or shears.

Claims (2)

1. a trepan, comprising: drill body and key, key is removably insertable into first formed in the middle part of described drill body and leads to Hole；It is characterized in that: farther include sleeve pipe,

Being formed with the second through hole in the middle part of sleeve pipe, sleeve pipe is formed with rotatable block in bottom around its periphery；The inner surface of sleeve pipe It is formed with female thread；

Described drill body is contained in described second through hole；The outside of described drill body is prolonged it and is vertically arranged with graduation mark；Outside drill body Surface is formed with external screw thread, engages with the female thread with sleeve pipe；The circular cutter that can adjust drill body bottom by rotating drill body prolongs Stretch out the length of the bottom surface of the block of sleeve pipe；When the circular cutter of drill body bottom flushes with the bottom surface of block, the end face of sleeve pipe with The zero graduation alignment of graduation mark；When the bottom surface of the block that the circular cutter of drill body bottom extends sleeve pipe, its length extended can Reflected by described graduation mark scale value of aliging with the end face of sleeve pipe.

2. trepan as claimed in claim 1, it is characterised in that: described block is formed as transparent.