CN212281604U - Novel broken screw taking device - Google Patents

Abstract

The utility model discloses a novel screw broken nail taking device, which is characterized in that the device comprises a nail taking pipe and a locking pipe which is in threaded connection with the outer side wall of the nail taking pipe, a plurality of contraction clamping jaws are arranged on one end surface of the nail taking pipe along the circumferential direction of the nail taking pipe at equal intervals, the thickness dimension of the contraction clamping jaws is gradually increased outwards along the length direction of the nail taking pipe and is arranged in a horn shape, one side of the outer side wall of the contraction clamping jaws, which is close to the nail taking pipe, is completely attached to the outer side wall of the nail taking pipe, a contraction gap is formed between any two adjacent contraction clamping jaws, a plurality of contraction clamping jaws surround to form a containing cavity for containing broken nails, a curved surface is arranged on the inner side wall of the contraction clamping jaws, a nail taking handle is arranged at one end of the nail taking pipe, which is far away from the contraction clamping jaws, the contraction clamping jaws gradually shrink into the containing cavity, the screw taking device is convenient to operate, can firmly clamp screws, and is suitable for screws of any specification.

Description

Novel broken screw taking device

Technical Field

The utility model relates to the field of medical equipment, more specifically say, it relates to a novel disconnected nail of screw is got nail device.

Background

When a fracture accident occurs, an internal fixation method is generally needed at the fracture position: fixing the fracture position by using a steel plate and matching with a medical screw; when the steel plate is taken down after the fracture is healed, the following situations can occur in the process of erecting the steel plate for a long time: 1. the local bearing capacity of the screw is too large, so that the steel plate and the screw cap are broken, the screw remains in the bone, and the screw is broken; 2. the fatigue strength of the screw reaches a limit, which causes a phenomenon that the screw is twisted off when the steel plate is taken out.

For the fracture patients, the most worries are whether good broken bone connection is achieved or not and whether all the screws for fixing the steel plate are taken out or not. The existing nail extractor has the defects of unstable clamping, secondary damage to bones, incapability of being applicable to screws with different diameters, multiple specification sizes of the nail extractor, influence on the operation progress and adverse influence on patients due to the fact that the nail extractor is replaced when the specifications are found to be inconsistent in the using process.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a novel disconnected nail of screw is got nail device, this get nail ware convenient operation can be firm with the screw centre gripping, is applicable to the screw of arbitrary specification.

In order to achieve the above purpose, the utility model provides a following technical scheme: a novel screw broken nail taking device comprises a nail taking pipe and a locking pipe in threaded connection with the outer side wall of the nail taking pipe, wherein the nail taking pipe is of a cylindrical structure, a plurality of contraction clamping jaws used for clamping broken nails are arranged on one end face of the nail taking pipe along the circumferential equidistance of the nail taking pipe, the contraction clamping jaws are made of elastic materials, the thickness of each contraction clamping jaw is gradually increased outwards along the length direction of the nail taking pipe and is arranged in a horn shape, one side, close to the nail taking pipe, of the outer side wall of each contraction clamping jaw is completely attached to the outer side wall of the nail taking pipe, contraction gaps are formed between any two adjacent contraction clamping jaws, the contraction clamping jaws surround to form a containing cavity used for containing the broken nails, a curved surface capable of increasing the contact area with screws is arranged on the inner side wall, in contact with the screws, one end, far away from the contraction clamping jaws, of the nail taking pipe is provided with a nail, the locking pipe shrinks gradually towards the containing cavity in the rotating and moving process towards the shrinking clamping jaw direction until the broken nail is clamped.

The utility model discloses further set up to: the nail taking pipe is internally provided with a negative pressure cavity communicated with the containing cavity, a connecting film which completely covers the contraction gap is arranged between any two adjacent contraction clamping jaws, the connecting film is made of elastic materials, a negative pressure device which enables negative pressure to be formed in the negative pressure cavity is arranged in the negative pressure cavity, and a layer of reusable nano silica gel belt is arranged on the inner side wall of the nail taking pipe.

The utility model discloses further set up to: the negative pressure device comprises an electric air ejector externally connected with the nail taking pipe, the electric air ejector comprises an electric air exhaust pipe connected with a negative pressure cavity, and a filter screen for preventing nail scraps from entering the electric air ejector is arranged at the inlet end of the electric air exhaust pipe.

The utility model discloses further set up to: negative pressure device is including the gasbag pipe of bleeding gasbag and intercommunication gasbag and negative pressure cavity of bleeding, the one end of gasbag and gasbag pipe intercommunication of bleeding is provided with only can the interior gas flow of negative pressure cavity first check valve in the gasbag of bleeding, it is provided with the inside gas flow outside second check valve of gasbag only to bleed to be provided with on the gasbag, the one end that the gasbag pipe is located the negative pressure cavity is provided with the cassette.

The utility model discloses further set up to: the negative pressure device comprises a piston connected in the negative pressure cavity in a sliding mode and a connecting rod used for driving the piston to slide along the length direction of the nail taking pipe, wherein the end, far away from the piston, of the connecting rod is provided with a detachable connecting handle, and a fiber layer which is not adhered to the nano silica gel belt is arranged on the peripheral side wall of the piston.

The utility model discloses further set up to: get the nail handle and get the nail pipe and can dismantle the connection, it is provided with the screw hole that supplies two to get nail handle spiro union respectively on the nail pipe to get, it all is provided with the threaded rod with the screw hole spiro union on the nail handle to get.

The utility model discloses further set up to: and continuous thread structures are arranged on the outer side wall of the contraction clamping jaw and the outer side wall of the nail taking pipe.

The utility model discloses further set up to: the shrink clamping jaw is provided with threely, be provided with inside bellied sand grip on the inside wall of shrink clamping jaw and disconnected nail contact, the length direction of sand grip is the same with the length direction of clamping jaw, the sand grip is provided with a plurality of and disconnected nail increase frictional force's dogtooth along its length direction.

The utility model discloses further set up to: one side of the locking pipe close to the nail taking handle is provided with a rotating handle for a user to control the locking pipe to rotate.

To sum up, the utility model discloses following beneficial effect has: 1. the design on inclined plane can be at the locking pipe removal in-process, will shrink the clamping jaw gradually and push down to holding in the cavity to the locking pipe moves the shrink clamping jaw more toward outer and pushes down more, thereby can play good fastening to the broken nail homoenergetic of different footpaths, and application scope is wide.

2. Make the locking pipe to remove to shrink clamping jaw direction gradually through rotatory locking pipe, make the shrink clamping jaw remove to holding the cavity direction through the inclined plane on the shrink clamping jaw of pushing down, press from both sides the nail tight absolutely until, extract the rotatory of disconnected nail through getting the nail handle at last, convenient operation.

Drawings

FIG. 1 is a schematic perspective view of a staple remover;

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

FIG. 3 is a schematic perspective view of the nail extractor provided with a piston;

FIG. 4 is a schematic perspective view of the staple removing tube;

FIG. 5 is a schematic perspective view of the staple removing handle separated from the staple removing tube;

FIG. 6 is a schematic perspective view of the nail extractor provided with an electric air ejector;

figure 7 is a schematic plan view of a suction balloon.

Reference numerals: 1. taking the nail tube; 11. retracting the clamping jaw; 111. a convex strip; 112. a convex tooth; 12. a receiving cavity; 13. a contraction gap; 14. a thread structure; 15. taking a nail handle; 151. a threaded rod; 16. a threaded hole; 2. a locking tube; 21. rotating the handle; 3. a negative pressure device; 31. connecting the films; 32. a negative pressure cavity; 33. an electric air extractor; 331. an electric air exhaust pipe; 34. air pumping air bag; 341. a balloon tube; 342. a first check valve; 343. a second one-way valve; 344. a filter disc; 35. a piston; 351. a connecting rod; 352. a handle is connected.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 7, in order to achieve the above object, the present invention provides the following technical solutions: a novel broken screw taking device comprises a screw taking pipe 1 which is arranged in a cylindrical structure and a locking pipe 2 which is in threaded connection with the outer side wall of the screw taking pipe 1, wherein a plurality of contraction clamping jaws 11 used for clamping broken screws are arranged on one end face of the screw taking pipe 1 along the circumferential direction of the screw taking pipe at equal intervals, the contraction clamping jaws 11 are made of elastic materials, the thickness dimension of the contraction clamping jaws 11 is gradually increased outwards along the length direction of the screw taking pipe 1 and is arranged in a horn shape, the horn-shaped design can gradually press the contraction clamping jaws 11 down into a containing cavity 12 in the moving process of the locking pipe 2, and the contraction clamping jaws 11 are pressed downwards as the locking pipe 2 moves outwards, so that broken screws with different diameters can be well fastened, and the application range is wide;

the lateral wall of shrink clamping jaw 11 is close to the setting of laminating completely of one side of getting nail pipe 1 and the lateral wall of getting nail pipe 1, 1: the shrinkage clamping jaw 11 is ensured to have sufficient thickness, and the quality requirement is ensured; 2. when the locking tube 2 is moved onto the retracting jaws 11, the clamping operation can be performed at a first time.

A retraction gap 13 is formed between any two adjacent retraction jaws 11, because the retraction jaws 11 need to move into the receiving cavity 12, and the retraction gap is designed to avoid the inconvenience of moving due to the contact with the adjacent retraction jaws 11.

A plurality of shrink clamping jaws 11 surround and form the cavity 12 that holds that is used for holding disconnected nail, be provided with the curved surface that can increase with screw area of contact on the inside wall that shrink clamping jaw 11 and screw contact, get that the one end that nail pipe 1 kept away from shrink clamping jaw 11 is provided with and supplies the user to take and hold and get nail handle 15, and locking pipe 2 contracts gradually until pressing from both sides tight disconnected nail towards shrink clamping jaw 11 direction rotary motion in-process shrink clamping jaw 11 in holding cavity 12. Make locking pipe 2 to shrink clamping jaw 11 direction removal gradually through locking pipe 2, through pressing down on the shrink clamping jaw 11 make shrink clamping jaw 11 to holding cavity 12 direction removal, until will cut off the nail and press from both sides tightly, pull out the rotation of cutting off the nail through getting nail handle 15 at last.

Get and be provided with in the nail pipe 1 and hold the negative pressure cavity 32 of cavity 12 intercommunication, be provided with the connection membrane 31 that covers shrinkage clearance 13 completely between two arbitrary adjacent shrink clamping jaws 11, connect membrane 31 and make by elastic material, elastic material's design is to guarantee that the shrinkage clearance is usable all the time, is provided with in the negative pressure cavity 32 and makes the negative pressure device 3 that forms the negative pressure in the negative pressure cavity 32, gets and is provided with the nanometer silica gel area that the one deck can use repeatedly on the nail pipe 1 inside wall. The nano silica gel has silica gel and rubber composition 1 and has viscosity; 2. the product is still sticky after being washed with water and dried in the sun; so can adsorb bone bits, nail bits to can use repeatedly after the washing, the design of connecting 31 elastic material of membrane: 1. so that the retracting jaws 11 can always move unimpeded; 2. the characteristic of keeping the circumferential side of the containing cavity 12 airtight is that; the negative pressure device 3 can remove nail bits, bone bits's operation before getting the nail with original nail bits, the bone bits suction that originally produced, also can inhale the bits operation in step getting the nail in-process, with nail bits, the bone bits suction that appear in the operation process, after getting the nail and accomplishing, also can carry out the operation of final ending and cleaning through the device. Thereby ensuring no bone chips and nail chips left on the bone and improving the operation guarantee of the patient.

The negative pressure device 3 comprises an electric air ejector 33 externally connected with the nail taking pipe 1, the electric air ejector 33 comprises an electric air extracting pipe 331 connected with the negative pressure cavity 32, and a filter screen for preventing nail scraps from entering the electric air ejector 33 is arranged at the inlet end of the electric air extracting pipe 331. The design person of electronic air ejector 33 uses, can also rationally control the dynamics of bleeding, and it is convenient to adjust, and in addition, the design of filter screen can prevent that bone bits, nail bits from getting into electronic air ejector 33 in, causes the damage of electronic air ejector 33.

The negative pressure device 3 comprises a suction air bag 34 and an air bag tube 341 communicating the suction air bag 34 with the negative pressure cavity 32, one end of the suction air bag 34 communicating with the air bag tube 341 is provided with a first one-way valve 342 only capable of allowing the air in the negative pressure cavity 32 to flow to the suction air bag 34, the suction air bag 34 is provided with a second one-way valve 343 only capable of allowing the air in the suction air bag 34 to flow to the outside, and one end of the air bag tube 341 in the negative pressure cavity 32 is provided with a filter 344. By pressing the air-bleeding air bag 34, the air in the air-bleeding air bag 34 is discharged outwards from the second one-way valve 343, so that the air pressure of the air-bleeding air bag 34 is smaller than the air pressure in the negative pressure cavity 32, the air in the negative pressure cavity 32 flows to the air-bleeding air bag 34 through the first one-way valve 342, the negative pressure cavity 32 forms low pressure, the air flow at the broken nail position flows into the negative pressure cavity 32, and the nail chips and the bone chips are brought into the negative pressure cavity 32.

The negative pressure device 3 comprises a piston 35 connected in the negative pressure cavity 32 in a sliding manner and a connecting rod 351 used for driving the piston 35 to slide along the length direction of the nail taking tube 1, a detachable connecting handle 352 is arranged at one end, away from the piston 35, of the connecting rod 351, a layer of reusable nano silica gel tape is also arranged at one end, facing the negative pressure cavity 32, of the piston 35, and a fiber layer which is not adhered to the nano silica gel tape is arranged on the peripheral side wall of the piston 35. And the design of fibrous layer is because this nanometer silica gel area can not paste the cloth class to avoid piston 35 to be pasted and the condition of not good removal, use piston 35 in-process to have obvious power to feel immediately, make the user can accurately hold the pulling distance, thereby play the effect of control negative pressure intensity, make the increase of negative pressure cavity 32 inner area through pulling piston 35, atmospheric pressure reduces, forms in the bone bits, the nail bits suction negative pressure cavity 32 of negative pressure with disconnected nail position department. The connecting handle 352 is detachably designed to facilitate the piston 35 to be taken out, so that the end face of the piston 35 and the inner side wall of the nail taking pipe 1 can be cleaned, and the cross section of the connecting handle 352 is of a polygonal structure, so that a user can pull the connecting handle.

Get nail handle 15 and get nail pipe 1 and can dismantle the connection, get and be provided with on the nail pipe 1 and supply two screw holes 16 that get the spiro union of nail handle 15 respectively, get and all be provided with the threaded rod 151 with the screw hole 16 spiro union on the nail handle 15. Get nail handle 15 and be two and be the setting of shaft-like structure, two axial of getting nail handle 15 and the perpendicular setting of the axial of getting nail pipe 1, and two the central axis of getting nail handle 15 is located same straight line, consider the condition of infection appears in the operation in-process in order to avoid the wound, must guarantee medical instrument's clean degree, get the design of nail handle 15 detachable, after getting nail handle 15 and take off, the cover is established and is being got the back that nail pipe 1 is last locking pipe 2 and also can be in succession from getting nail handle 15 this end and take off, thereby can conveniently wash the lateral wall of getting nail pipe 1 and the inside wall of locking pipe 2, avoid appearing washing the dead angle, guarantee the health of getting the nail ware, the design of screw hole 16 and threaded rod 151: both guaranteed to get nail handle 15 and get when nail pipe 1 screws, it is enough firm to get nail handle 15, can not appear getting nail handle 15 and getting the condition of nail pipe 1 separation when follow-up rotation is taken out disconnected nail, get nail handle 15 and demolish the back, because the structure that the protrusion comes on getting nail handle 15, can not influence taking out of locking pipe 2. Besides, the design of the position and the direction of the nail taking handle 15 is convenient for a user to rotate the nail taking pipe 1 to take out broken nails when the locking pipe 2 is matched with the shrinkage clamping jaw 11 to clamp the broken nails.

The outer side wall of the contraction clamping jaw 11 and the outer side wall of the nail taking pipe 1 are provided with continuous thread structures 14. The continuous thread structure 14 ensures that the locking pipe 2 and the nail taking pipe 1 are firmly screwed, and the friction force between the locking pipe 2 and the nail taking pipe 1 is increased to the maximum extent, so that the contraction clamping jaw 11 is ensured to have enough stability.

The number of the contraction clamping jaws 11 is three, convex strips 111 protruding inwards are arranged on the inner side walls, contacting the contraction clamping jaws 11 with the broken nails, the length direction of the convex strips 111 is the same as that of the clamping jaws, and a plurality of convex teeth 112 increasing friction force with the broken nails are arranged on the convex strips 111 along the length direction. This convex strip 111 cooperation epirelief tooth 112's design can increase the rotatory frictional force between shrink clamping jaw 11 and the disconnected nail to avoid shrink clamping jaw 11 and take place relative rotation between the disconnected nail, lead to the condition that disconnected nail and shrink clamping jaw 11 take place to shift, the three design of shrink clamping jaw 11: 1. if the design of the contraction clamping jaw 11 is excessive, the number of contraction gaps is relatively increased, so that the contact area is reduced, clamping and fixing are not facilitated, the cross section of the contraction clamping jaw 11 is reduced due to excessive design, the fine degree of work is increased, and production is inconvenient; 2. the fixing method of the three clamping points is the same as that of triangle fixing, and the fixing is firm and is not easy to deform.

The side of the locking tube 2 close to the nail taking handle 15 is provided with a rotating handle 21 for controlling the locking tube 2 to rotate by a user. The locking pipe 2 is gradually moved towards the direction of the contracting clamping jaw 11 by rotating the rotating handle 21, and the rotating handle 21 can achieve the effect of facilitating the operation of a user.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a novel nail device is got to disconnected nail of screw, characterized by including getting nail pipe (1) and with getting the locking pipe (2) of nail pipe (1) lateral wall spiro union of being the setting of cylindricality structure, it is provided with a plurality of shrink clamping jaws (11) that are used for the disconnected nail of centre gripping to arrange along its circumference equidistance on the terminal surface of nail pipe (1) to get, shrink clamping jaw (11) are made by elastic material, the thickness dimension of shrink clamping jaw (11) outwards increases progressively and is the horn shape setting along getting nail pipe (1) length direction, the lateral wall of shrink clamping jaw (11) is close to one side of getting nail pipe (1) and gets the lateral wall of nail pipe (1) and laminates the setting completely, is formed with shrink clearance (13) between arbitrary adjacent two shrink clamping jaws (11), and a plurality of shrink clamping jaw (11) surround and form the cavity (12) that hold that are used for holding disconnected nail, be provided with the curved surface that can increase and screw area of contact on shrink clamping jaw (11) and the inside wall, one end of the nail taking pipe (1) far away from the contraction clamping jaw (11) is provided with a nail taking handle (15) held by a user, and the contraction clamping jaw (11) gradually shrinks into the containing cavity (12) until a broken nail is clamped in the locking pipe (2) in the rotating movement process towards the direction of the contraction clamping jaw (11).

2. The novel broken screw taking device as claimed in claim 1, which is characterized in that: get and be provided with in nail pipe (1) with the negative pressure cavity (32) that holds cavity (12) intercommunication, be provided with between arbitrary two adjacent shrink clamping jaws (11) and cover connection membrane (31) of shrink clearance (13) completely, connect membrane (31) and make by elastic material, be provided with in negative pressure cavity (32) and make negative pressure device (3) of negative pressure in negative pressure cavity (32), it is provided with the nanometer silica gel area that the one deck can use repeatedly on nail pipe (1) inside wall to get.

3. The novel broken screw taking device as claimed in claim 2, which is characterized in that: the negative pressure device (3) is including taking electronic air ejector (33) of external setting of nail pipe (1), electronic air ejector (33) is including electronic exhaust tube (331) of being connected with negative pressure cavity (32), the entrance point of electronic exhaust tube (331) is provided with prevents that nail bits from getting into the filter screen in electronic air ejector (33).

4. The novel broken screw taking device as claimed in claim 2, which is characterized in that: negative pressure device (3) are including air bag pipe (341) of air bag (34) and intercommunication air bag (34) and negative pressure cavity (32) of bleeding, the one end that air bag (34) and air bag pipe (341) communicate is provided with first check valve (342) in only can negative pressure cavity (32) gas flow direction air bag (34), be provided with second check valve (343) that only can bleed air bag (34) internal gas flow outside on air bag (34), the one end that air bag pipe (341) are located negative pressure cavity (32) is provided with cassette (344).

5. The novel broken screw taking device as claimed in claim 2, which is characterized in that: negative pressure device (3) including slide connect piston (35) in negative pressure cavity (32) with be used for driving piston (35) along getting connecting rod (351) that nail pipe (1) length direction slided, the one end that piston (35) were kept away from in connecting rod (351) is provided with detachable connection handle (352), piston (35) also is provided with the nanometer silica gel area that the one deck can be used repeatedly towards the one end of negative pressure inner chamber, be provided with the fibrous layer that the one deck is not pasted with nanometer silica gel area on the week lateral wall of piston (35).

6. The novel broken screw taking device as claimed in claim 1, which is characterized in that: get nail handle (15) and get nail pipe (1) and can dismantle the connection, it is provided with screw hole (16) that supply two to get nail handle (15) spiro union respectively on nail pipe (1) to get, it all is provided with threaded rod (151) with screw hole (16) spiro union on nail handle (15) to get.

7. The novel broken screw taking device as claimed in claim 1, which is characterized in that: and continuous thread structures (14) are arranged on the outer side wall of the contraction clamping jaw (11) and the outer side wall of the nail taking pipe (1).

8. The novel broken screw taking device as claimed in claim 1, which is characterized in that: shrink clamping jaw (11) are provided with threely, be provided with inside bellied sand grip (111) on shrink clamping jaw (11) and the inside wall of disconnected nail contact, the length direction of sand grip (111) is the same with the length direction of clamping jaw, sand grip (111) are provided with a plurality of and disconnected nail increase frictional force's dogtooth (112) along its length direction.

9. The novel broken screw taking device as claimed in claim 1, which is characterized in that: one side of the locking pipe (2) close to the nail taking handle (15) is provided with a rotating handle for a user to control the rotation of the locking pipe (2).

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