CN216876646U - Broken needle taking device - Google Patents

Abstract

The utility model provides a broken needle taking device, which comprises: the device body, the body that predetermined length was extended towards the direction of keeping away from the device body in device body and the other end to one end assembly, one end stretches into this internal and the other end of device and extends the sleeve outside the body and the subassembly is drawn in receiving of device body along the length direction of body, the one end that the device body was kept away from to the sleeve has the portion of fetching, the portion of fetching has elasticity and the portion of fetching has accommodation space, accommodation space's diameter is greater than the port diameter of the one end that the device body was kept away from to the body, the portion of fetching is used for pressing from both sides tight broken needle after being extruded the shrink by the sleeve, receive and draw the subassembly and be used for driving the sleeve and remove, so that the portion of fetching moves towards the direction that is close to the body. The nesting part is provided with the accommodating space, so that the nesting part can be quickly positioned; the sleeving and taking part has elasticity, and the sleeving and taking part generates elastic deformation to enable the sleeving and taking part to clamp the broken needle, so that the difficulty of taking out the broken needle is greatly reduced, the occurrence of complications is reduced, and the operation safety is improved.

Description

Broken needle taking device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a broken needle taking device.

Background

In the root canal treatment of an affected tooth, root canal instruments are required to perform operations such as root canal penetration, root canal preparation and the like, for example, a broach, a C file, a K file and a nickel titanium file. In the related technology, the broken needle is taken by utilizing the ultrasonic technology, so that the original root canal is greatly damaged, the wall of the root canal becomes relatively weak, the risk of root fissure after root canal treatment is increased, and even complications such as lateral root canal penetration and the like can occur; for instrument separation beyond the apical foramen, assistance with apical surgery may also be required, resulting in greater trauma.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a broken needle taking device, and aims to solve the problem that the broken needle taking operation in the related technology is difficult and reduce the occurrence of complications.

In order to solve the above technical problems, the present invention is achieved as described above, and a broken needle removing device includes: the device body, one end assemble in device body and other end are towards keeping away from the body of the device body's direction extends predetermined length's body, one end stretch into to this internal and other end of device is followed the length direction of body extends the sleeve outside the body and slide assembly in the subassembly is drawn in drawing of device body's receipts, the sleeve is kept away from the one end of device body has the portion of getting, the portion of getting has elasticity just the portion of getting gets to get to have accommodation space, accommodation space's diameter is greater than the body is kept away from the port diameter of the one end of device body, the portion of getting is used for by the tight needle of clamp after the sleeve extrusion shrink, it is used for driving to draw the subassembly to receive the sleeve removes, so that the portion of getting is towards being close to the direction removal of body.

Preferably, the circumferential wall of the sleeving and taking part is of a net structure, at least one positioning part is arranged at one end, away from the pipe body, of the sleeving and taking part, the positioning part protrudes towards the accommodating space, and an arc surface matched with the broken needle is arranged at one end, away from the sleeving and taking part, of the positioning part.

Preferably, a stop ring is fixed at one end of the pipe body far away from the device body, and the diameter of the stop ring is smaller than that of the accommodating space.

Preferably, one end of the tube body, which is far away from the nesting part, extends into the device body, and one end of the tube body, which is far away from the device body, is bent by a preset angle.

Preferably, the device body includes a housing having a wire passage, one end of the tube body assembled to the device body extends into the wire passage, one end of the sleeve extending into the device body is located in the wire passage, two ends of the housing are respectively assembled with a first blocking member and a second blocking member, the retraction assembly is slidably assembled to the housing and located between the first blocking member and the second blocking member, and the retraction assembly is configured to drive the sleeve to move in the wire passage.

Preferably, the casing is provided with a yielding groove communicated with the wire passing channel, the length extending direction of the yielding groove is parallel to the length extending direction of the wire passing channel, the retraction assembly comprises a first abutting piece and a second abutting piece, the first abutting piece is slidably assembled on the casing and located in the yielding groove, the second abutting piece is fixed on the sleeve and located in the wire passing channel, the first abutting piece extends into the wire passing channel, the first abutting piece can abut against the second abutting piece, and the second abutting piece is located on the sliding track of the first abutting piece.

Preferably, the retraction assembly further comprises a handle slidably mounted on the housing and disposed between the first blocking member and the second blocking member, the first blocking member is movably mounted on the handle, and the first blocking member can move to abut against the second blocking member.

Preferably, the handle includes a sliding portion slidably mounted on the housing and at least one push-pull portion fixed to the sliding portion, the push-pull portion is disposed on a side of the sliding portion, and the push-pull portion can slide to abut against the first blocking member and the sliding portion can slide to abut against the second blocking member.

Preferably, the device body further includes a sliding member slidably mounted in the housing and disposed between the second blocking member and the handle, the sliding member has a protruding portion located in the wire passage, and one end of the tube body extending into the wire passage passes through the second blocking member and is fixed to the protruding portion.

Preferably, the second blocking member is detachably fitted to the housing, and the second blocking member has a tapered structure.

Compared with the prior art, the broken needle taking device has the beneficial effects that: the withdrawing part is provided with the accommodating space, so that broken needles can easily enter the withdrawing part, and the withdrawing part can be quickly positioned; after the retraction assembly drives the sleeving part to move a certain distance towards the direction close to the tube body, the tube body can extrude the sleeving part due to the fact that the diameter of the accommodating space is larger than the diameter of the port at the end, far away from the device body, of the tube body, the sleeving part has elasticity, the sleeving part is elastically deformed, so that the sleeving part clamps the broken needle, the broken needle can be taken out at the moment, the difficulty of taking out the broken needle is greatly reduced, trauma to the root canal is reduced, and the operation safety is improved; meanwhile, the broken needle taking device is simple in structure and convenient to install.

Drawings

FIG. 1 is a schematic view of the overall structure of a broken needle removing device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a broken needle removal device in an embodiment of the present invention;

FIG. 3 is an enlarged view of detail A in FIG. 2;

FIG. 4 is a left side view of a broken needle removing device in an embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

fig. 6 is an enlarged view of detail C in fig. 5.

In the drawings, each reference numeral denotes: 1. a device body; 11. a housing; 111. a wire passage; 112. a yielding groove; 12. a slider; 121. a boss portion; 13. a first blocking member; 14. a second blocking member; 15. a connecting member; 2. a pipe body; 3. a sleeve; 31. a nesting part; 311. an accommodating space; 312. a positioning part; 4. a retracting component; 41. a first stopper; 42. a second stopper; 43. a handle; 431. a sliding part; 432 a push-pull part; 44. a fixed seat; 5. a stop ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example (b):

referring to fig. 1 to 6, in the present embodiment, a broken needle removing device includes: the device body 1, one end assembles in device body 1 and the other end extends predetermined length's body 2 towards the direction of keeping away from device body 1, one end stretches into in device body 1 and the other end extends the sleeve 3 outside the body 2 along the length direction of body 2 and the subassembly 4 that draws of sliding assembly in device body 1, the one end that the sleeve 3 kept away from device body 1 has the portion of taking 31, the portion of taking 31 has elasticity and the portion of taking 31 has accommodation space 311, the diameter of accommodation space 311 is greater than the port diameter of the body 2 one end of keeping away from device body 1, the portion of taking 31 is used for pressing from both sides tight broken needle after the shrink by sleeve 3, it moves to draw subassembly 4 to be used for driving sleeve 3, so that the portion of taking 31 removes towards the direction that is close to body 2. Because the extracting part 31 is provided with the accommodating space 311, the broken needle can easily enter the extracting part 31, so that the extracting part 31 can realize quick positioning, the probability that the extracting part 31 collides with the root canal is reduced, and the extracting part 31 is prevented from damaging the root canal; after the retraction assembly 4 drives the sleeving and taking part 31 to move a certain distance towards the direction close to the tube body 2, because the diameter of the accommodating space 311 is larger than the diameter of the port at the end of the tube body 2 far away from the device body 1, the tube body 2 can extrude the sleeving and taking part 31, the sleeving and taking part 31 has elasticity, the sleeving and taking part 31 generates elastic deformation to enable the sleeving and taking part 31 to clamp a broken needle, and the broken needle can be taken out at the moment, so that the difficulty of taking out the broken needle is greatly reduced, the wound to the root canal is reduced, and the safety of operation is improved; meanwhile, the broken needle taking device is simple in structure and convenient to install.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the peripheral wall of the engaging portion 31 is a net structure, at least one positioning portion 312 is disposed at one end of the engaging portion 31 away from the tube 2, the positioning portion 312 protrudes toward the accommodating space 311, and one end of the positioning portion 312 away from the engaging portion 31 has an arc surface adapted to the broken needle. Specifically, the sleeve 3 may be a solid cylinder, so that the sleeve 3 has sufficient toughness to ensure that the sleeve 3 does not elastically extend along the length direction of the sleeve 3 when the retraction assembly 4 drives the sleeve 3 to move; the sleeve 3 is made by elastic material, like spring steel, copper, titanium, rubber, plastics etc. the portion 31 of getting can be for processing sleeve 3 and form, and sleeve 3 and the integration of the portion 31 of getting promptly set up for the joint strength between sleeve 3 and the portion 31 of getting is high, and difficult fracture takes place, and the manufacture process of the portion 31 of getting is as follows: firstly, digging the sleeve 3 into a hollow inner part, then manufacturing a peripheral wall corresponding to the hollow inner part of the sleeve 3 into a net-shaped structure, and then expanding the sleeve 3 to form a sleeving part 31 with an accommodating space 311; it can be understood that, during the manufacturing process of the extracting portion 31, the peripheral wall of the net structure is beneficial to expanding the sleeve 3 and keeping a certain shape, and also can ensure that the extracting portion 31 shrinks when being squeezed by the tube body 2, so that the extracting portion 31 clamps the broken needle. The positioning parts 312 may be in a trapezoid-like shape, and one end of the sleeving and taking part 31 away from the tube body 2 is provided with four positioning parts 312, and the four positioning parts 312 are symmetrically arranged by taking the central axis of the sleeve 3 as a symmetry axis, so that the positioning parts 312 can position and clamp the broken needle; preferably, the arc surface may be an arc surface, which may ensure that the positioning portion 312 is tightly attached to the broken needle, and further improve the clamping capability of the extracting portion 31.

Referring to fig. 2, fig. 3 and fig. 6, in the present embodiment, a stop ring is fixed at an end of the tube 2 away from the device body 1, and a diameter of the stop ring is smaller than a diameter of the accommodating space 311. Specifically, the pipe body 2 can be a double-layer pipeline with a gap, and a double-layer light path can ensure that the sleeve 3 is not polluted by the external environment and ensure the cleanliness requirement of the sleeve 3; the pipe body 2 is made of a metal material, so that the pipe body 2 is ensured to have enough rigidity in the using process so as not to bend, the blocking ring is fixed on the pipe body 2 and seals the gap of the pipe body 2, the blocking ring and the pipe body 2 are made of the same material, the diameter of the blocking ring is smaller than that of the accommodating space 311, the sleeving part 31 is extruded through the blocking ring, the surface of the blocking ring is a curved surface, and the sleeving part 31 is prevented from being scratched; meanwhile, the blocking ring can be directly replaced after being worn and torn after being used for a long time, so that the pipe body 2 does not need to be replaced, the maintenance is simple, and the maintenance cost is low.

Referring to fig. 1, 2 and 3, in the present embodiment, an end of the tube 2 away from the extracting portion 31 extends into the device body 1, and an end of the tube 2 away from the device body 1 is bent by a predetermined angle. Specifically, the tube body 2 has a certain length, so that the tube body 2 extends out of the device body 1 for a certain distance to ensure that the tube body 2 has enough length to extend into the oral cavity to clamp broken needles; the one end that portion 31 was got to the cover was kept away from to body 2 extends to the device body 1 in, can guarantee that body 2 has sufficient length in the device body 1, avoids the outer body 2 of device body 1 to take place the warpage, and simultaneously, body 2 and device body 1's area of contact increase also is favorable to fixing body 2. Preferably, the one end of body 2 is kept away from device body 1 and is buckled predetermined angle, and predetermined angle can be 90, and the user can get the broken needle in the multi-angle clamp in the oral cavity, further reduces the operation degree of difficulty of getting the broken needle device. In other embodiments, the bending angle may be set according to actual requirements, such as 45 degrees, 60 degrees, and the like.

Referring to fig. 1, 2 and 3, in the embodiment, the device body 1 includes a housing 11 having a wire passage 111, one end of the tube body 2 assembled to the device body 1 extends into the wire passage 111, one end of the sleeve 3 extending into the device body 1 is located in the wire passage 111, two ends of the housing 11 are respectively assembled with a first blocking member 13 and a second blocking member 14, the retraction assembly 4 is slidably assembled to the housing 11 and located between the first blocking member 13 and the second blocking member 14, and the retraction assembly 4 is used for driving the sleeve 3 to move in the wire passage 111. Specifically, the housing 11 may be a rectangular block, the inside of the rectangular block is hollow to form a wire passing channel 111, the sleeve 3 is disposed in the wire passing channel 111 and can move in the wire passing channel 111, and when the retraction assembly 4 slides on the housing 11, the sleeve 3 is driven to move in the wire passing channel 111, so that the sleeve 3 moves towards the retraction assembly 4, and the blocking ring extrudes the retraction part 31 to clamp the broken needle by the retraction part 31; the retraction assembly 4 is arranged between the first blocking piece 13 and the second blocking piece 14, so that the first blocking piece 13 and the second blocking piece 14 can block the retraction assembly 4 from sliding out of the housing 11; it will be appreciated that the first stop 13 also makes it possible to limit the distance of movement of the sleeve 3, avoiding the extraction portion 31 from completely sinking into the tubular body 2.

Referring to fig. 1, 4 and 5, in the embodiment, the housing 11 is provided with an avoiding groove 112 communicated with the wire passing channel 111, a length extending direction of the avoiding groove 112 is parallel to a length extending direction of the wire passing channel 111, the retracting assembly 4 includes a first abutting member 41 slidably mounted on the housing 11 and located in the avoiding groove 112, and a second abutting member 42 fixed on the sleeve 3 and located in the wire passing channel 111, the first abutting member 41 extends into the wire passing channel 111, the first abutting member 41 can abut against the second abutting member 42, and the second abutting member 42 is located on a sliding track of the first abutting member 41. Specifically, the receding groove 112 penetrates through two ends of the housing 11, the receding groove 112 is formed in one side surface of the housing 11, and a length extending direction of the receding groove 112 is parallel to a length extending direction of the wire passage 111, so that the first blocking member 13 is prevented from deviating during sliding; the first abutting member 41 can be a screw, the second abutting member 42 can be a hollow cylinder sleeved and fixed on the sleeve 3, and the second abutting member 42 is disposed on a side of the first abutting member 41 away from the second abutting member 14, it can be understood that, when the first abutting member 41 slides a certain distance in a direction away from the second abutting member 14, the first abutting member 41 abuts against the second abutting member 42 to move the sleeve 3, so that the sleeving and taking part 31 moves in a direction toward the pipe body 2, thereby the blocking ring extrudes the sleeving and taking part 31 to enable the sleeving and taking part 31 to contract to clamp the broken needle. Moreover, since the first stopper 41 is a screw, the first stopper 41 can be screwed to be out of contact with the second stopper 42, and then the first stopper 41 is slid to make the second stopper 42 located between the second stopper 14 and the first stopper 41, and then the first stopper 41 is screwed to be capable of abutting against the second stopper 42, at this time, the first stopper 41 can abut against the second stopper 42 after sliding a certain distance towards the second stopper 14, and the sleeve 3 moves towards the direction far away from the first stopper 13, so that the engaging portion 31 slides out of the tube body 2, and the engaging portion 31 elastically restores and releases the broken needle.

Referring to fig. 1, fig. 4 and fig. 5, in the present embodiment, the retracting assembly 4 further includes a handle 43 slidably mounted on the housing 11 and disposed between the first blocking member 13 and the second blocking member 14, the first blocking member 41 is movably mounted on the handle 43, and the first blocking member 13 can move to abut against the second blocking member 42; the handle 43 includes a sliding portion 431 slidably mounted on the housing 11 and at least one pushing and pulling portion fixed to the sliding portion 431, the pushing and pulling portion is disposed at a side of the sliding portion 431 and can slide against the first blocking member 13, and the sliding portion 431 can slide against the second blocking member 14. Specifically, the sliding portion 431 may be a rectangular frame, the sliding portion 431 has two opposite side surfaces, the two side surfaces are respectively provided with a push-pull portion, and the push-pull portion may be a circular ring, which is beneficial for a user to apply force to the push-pull portion to slide the sliding portion 431; a fixing seat is fixed on one side of the sliding portion 431, and the first abutting member 41 is assembled in the fixing seat to prevent the first abutting member 41 from being interfered by the external environment and failing. Preferably, the first abutting member 41 is movably mounted on the handle 43, and the first abutting member 13 can be moved to abut against the second abutting member 42, so that not only the first abutting member 41 can abut against the second abutting member 42 to move the sleeve 3, but also the first abutting member 41 can drive the sleeve 3 to move in two opposite directions; the first blocking piece 13 can be a circular ring, one end of the circular ring is fixed to the housing 11, when the handle 43 slides towards the first blocking piece 13 for a certain distance, the two push-pull parts respectively abut against the first blocking piece 13, the handle 43 stops sliding, and the push-pull parts can be matched with the first blocking piece 13 to prevent the handle 43 from sliding and separating from the end, provided with the first blocking piece 13, of the housing 11; when the handle 43 slides a certain distance towards the second blocking member 14, the sliding portion 431 abuts against the second blocking member 14, the handle 43 stops sliding, and the sliding portion 431 can be matched with the second blocking member 14 to prevent the handle 43 from sliding away from the end of the housing 11 where the second blocking member 14 is arranged.

Referring to fig. 1, 2 and 3, in the present embodiment, the device body 1 further includes a sliding member 12 slidably assembled to the housing 11 and disposed between the second blocking member 14 and the handle 43, the sliding member 12 has a protrusion 121 located in the wire passage 111, and one end of the tube body 2 extending into the wire passage 111 passes through the second blocking member 14 and is fixed to the protrusion 121. Specifically, slider 12 can be the sliding block, because body 2 stretches into the one end in crossing wire passage 111 and passes second stop 14 and be fixed in bellying 121, when slider 12 slided, body 2 followed slider 12 and slided, and body 2 and sleeve 3 take place to remove for the portion 31 of getting of registering that is located body 2 exposes, realizes external outside body 2 of portion 31 of getting of registering. In some embodiments of the present embodiment, the second blocking member 14 is detachably assembled to the housing 11, the second blocking member 14 has a tapered structure, the second blocking member 14 may be a conical member, a thread is provided inside the second blocking member 14, a fixing seat of the connecting member 15 adapted to the conical member is fixed at one end of the housing 11 where the second blocking member 14 is assembled, the fixing seat of the connecting member 15 may be a cylinder with a thread on a peripheral wall, and the second blocking member 14 is detachably assembled to the housing 11 by the threaded assembly between the second blocking member 14 and the fixing seat of the connecting member 15; it can be understood that, when the pipe body 2 needs to be replaced, the second blocking member 14 can be directly detached, and at this time, the sliding member 12 can take the pipe body 2 out of the wire passage 111, so as to facilitate the replacement of the pipe body 2, thereby facilitating the maintenance of the device. Preferably, the second blocking member 14 and the connecting member 15 are provided with a threading groove matched with the pipe body 2, and the threading groove and the threading channel 111 are coaxially arranged, so that the pipe body 2 can keep parallelism with the length extending direction of the threading channel 111, and the pipe body 2 is prevented from being warped; the protruding portion 121 is matched with the wire passing channel 111, at this time, the protruding portion 121 can play a role in sliding guiding of the sliding member 12, and the pipe body 2 penetrates through the protruding portion 121 and is fixed to the protruding portion 121, so that the sleeve 3 can be conveniently inserted into the pipe body 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A broken needle taking device is characterized by comprising: the device body, one end assemble in device body and other end are towards keeping away from the body of the device body's direction extends predetermined length's body, one end stretch into to this internal and other end of device is followed the length direction of body extends the sleeve outside the body and slide assembly in the subassembly is drawn in drawing of device body's receipts, the sleeve is kept away from the one end of device body has the portion of getting, the portion of getting has elasticity just the portion of getting gets to get to have accommodation space, accommodation space's diameter is greater than the body is kept away from the port diameter of the one end of device body, the portion of getting is used for by the tight needle of clamp after the sleeve extrusion shrink, it is used for driving to draw the subassembly to receive the sleeve removes, so that the portion of getting is towards being close to the direction removal of body.

2. The device for extracting broken needles according to claim 1, wherein the peripheral wall of the extracting portion is a net structure, at least one positioning portion is disposed at an end of the extracting portion away from the tube, the positioning portion protrudes toward the accommodating space, and an end of the positioning portion away from the extracting portion has an arc surface adapted to the broken needle.

3. A broken needle extracting device according to claim 1, wherein a blocking ring is fixed to one end of the tube body away from the device body, and the diameter of the blocking ring is smaller than that of the accommodating space.

4. A device for extracting broken needles according to claim 1, wherein an end of the tube body remote from the extracting portion extends into the device body, and an end of the tube body remote from the device body is bent at a predetermined angle.

5. The device for extracting broken needles as claimed in claim 1, wherein the device body comprises a housing having a through-passage, one end of the tube body assembled to the device body extends into the through-passage, one end of the sleeve extending into the device body is located in the through-passage, two ends of the housing are respectively assembled with a first blocking member and a second blocking member, the retraction assembly is slidably assembled to the housing and located between the first blocking member and the second blocking member, and the retraction assembly is configured to drive the sleeve to move in the through-passage.

6. The device of claim 5, wherein the housing defines a recess that is in communication with the passageway, a length of the recess extending in a direction parallel to a length of the passageway, the retraction assembly includes a first stop member slidably mounted in the housing and positioned in the recess and a second stop member fixed to the sleeve and positioned in the passageway, the first stop member extends into the passageway and the first stop member is capable of abutting against the second stop member, and the second stop member is positioned on a sliding path of the first stop member.

7. A break pin device as claimed in claim 6, wherein the retraction assembly further comprises a handle slidably mounted to the housing and disposed between the first blocking member and the second blocking member, the first blocking member is movably mounted to the handle, and the first blocking member is capable of moving to abut against the second blocking member.

8. A needle assembly according to claim 7 wherein the handle includes a slidable portion slidably mounted to the housing and at least one push-pull portion secured to the slidable portion, the push-pull portion being disposed on a side of the slidable portion and being slidable against the first blocking member and the slidable portion being slidable against the second blocking member.

9. The device of claim 7, wherein the device body further comprises a slider slidably mounted to the housing and disposed between the second stopper and the handle, the slider having a protrusion disposed in the passageway, and an end of the tube extending into the passageway extends through the second stopper and is secured to the protrusion.

10. A needle assembly according to claim 5 wherein said second blocking member is removably mounted to said housing, said second blocking member being of a tapered configuration.

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