CN220158363U

CN220158363U - Bone needle guiding and locking assembly and fixing system thereof

Info

Publication number: CN220158363U
Application number: CN202321113168.4U
Authority: CN
Inventors: 徐达强
Original assignee: Suzhou Hui Wei Da Medical Technology Co ltd
Current assignee: Suzhou Hui Wei Da Medical Technology Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-12-12
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses a bone needle guiding and locking assembly and a fixing system thereof, wherein the bone needle guiding and locking assembly comprises a guiding pipe and a locking piece, a locking hole communicated with a pipe cavity of the guiding pipe is formed in the pipe wall of the guiding pipe, the locking piece is positioned in the locking hole, and at least part of the locking piece can be driven to enter the pipe cavity of the guiding pipe; the fixing system comprises a bone fracture plate, bone spicules and the bone spicule guiding and locking assembly, wherein a fixing through hole is formed in the bone fracture plate, one end of the guiding tube is fixedly connected with the fixing through hole, the bone spicules are arranged in the tube cavity of the guiding tube, and the locking piece can be driven to tightly prop against the bone spicules. The utility model reduces the risk of fracture displacement when the bone needle fixes fracture; the operation risk of temporarily fixing the fracture by using the bone needle by a doctor is reduced; the influence of the bone needle on the placement of the bone plate is avoided; the length of the bone needle entering the intramedullary cavity is shortened, so that the application of the bone needle temporary fixation fracture technology in treating the fracture by the intramedullary nail is not limited; the stability is better than the stability of the fixation fracture of a plurality of Kirschner wires.

Description

Bone needle guiding and locking assembly and fixing system thereof

Technical Field

The utility model relates to the technical field of fracture fixation for medical treatment, in particular to a bone needle guiding and locking assembly and a fixation system thereof.

Background

In the operation process of treating the fracture, a doctor needs to restore the displaced fracture to normal alignment and alignment, at the moment, the fracture is in an unstable state, and the fracture needs to be temporarily fixed by using bone needles, reset forceps and the like, so that a foundation is laid for the following operation; however, the temporary fixation of the fracture by using the tool such as the bone needle and the reduction forceps requires a certain time and good surgical skill, and the use of the tool such as the bone needle and the reduction forceps at the fracture site generates additional acting force, and these factors are combined together, so that the temporary fixation of the fracture is a common clinical phenomenon in which the fracture is displaced again. Another problem is that sometimes the temporary fixation of the fracture using a bone pin, reduction forceps or the like does not provide sufficient mechanical stability, which allows the fracture to be displaced again during subsequent procedures, such as fluoroscopy of a different body position, implantation of intramedullary nails, bone plates, etc. When fracture is shifted again, the operation time and the wound are increased, and the treatment effect of the operation is reduced.

Therefore, in combination with the above-mentioned existing clinical technical problems, new innovations are necessary.

Disclosure of Invention

The utility model aims at least solving one of the defects in the prior art, and provides a bone needle guiding and locking assembly and a fixing system thereof, which concretely comprises the following steps:

the utility model provides a bone needle direction locking subassembly, its includes stand pipe and retaining member, the stand pipe is hollow tubular structure, be provided with the locking hole on the pipe wall of stand pipe, the locking hole with the lumen intercommunication of stand pipe, the retaining member is located in the locking hole, the retaining member can be driven at least partial entering to in the lumen of stand pipe.

Further, the locking piece is in threaded connection with the locking hole.

Further, one end of the locking piece, which is away from the guide tube cavity, is provided with a first protruding structure or a first groove structure.

Further, the sliding sleeve part is of a hollow tubular structure, the sliding sleeve part is arranged on the guide tube, the locking part extends out of the outer side of the tube wall of the guide tube, the sliding sleeve part can be driven to move to the locking hole, and the locking part is driven to move towards the tube cavity of the guide tube in the moving process of the sliding sleeve part.

Further, the lumen of the sliding sleeve member comprises a cylindrical cavity part and a conical cavity part along the axial direction, the cylindrical cavity part is communicated with the small-caliber port of the conical cavity part, the large-caliber port of the conical cavity part of the sliding sleeve member faces the locking member, the locking member is driven to move to the locking hole, and the conical cavity part drives the locking member to move towards the lumen of the guide tube.

Further, an inclined surface is arranged on the portion, extending out of the guide tube, of the sliding sleeve member, the locking member is driven to move to the locking hole, and the sliding member presses the inclined surface to drive the locking member to move towards the inner cavity of the guide tube.

Further, the sliding sleeve piece is in threaded connection with the guide tube.

Further, a thread structure is arranged on the pipe wall at one end of the guide pipe.

Further, the radial cross section shape of the pipe wall of the guide pipe part is non-circular; and/or

The other end of the guide tube is provided with a second protruding structure or a second groove structure.

The utility model provides a fixing system, its includes bone fracture plate, spicule and above-mentioned spicule direction locking subassembly, be provided with fixed through-hole on the bone fracture plate, the one end of stand pipe with fixed through-hole fixed connection, the spicule set up in the lumen of stand pipe, the retaining member can be driven get into the spicule is pressed to stand pipe lumen.

Furthermore, the spicule is also provided with a limiting piece.

Further, the tool comprises a special tool, the special tool comprises a handle and a tool rod, one end of the tool rod is connected with the handle, and an action structure is arranged at the other end of the tool rod.

Compared with the prior art, the bone needle guiding and locking assembly and the fixing system thereof have at least one or more of the following beneficial effects:

1. rapidly establishing primary stability at the fracture site, reducing the risk of fracture migration during this process: the locking piece or the sliding sleeve piece on the guide tube is screwed by the matched special screwdriver, so that preliminary stability can be quickly established at two ends of the fracture through the bone needle, the guide locking assembly and the bone fracture plate.

2. The use is flexible, and the number of the locking devices can be increased according to the requirement of the following operation so as to increase the reliability of temporary fracture fixation.

3. The adaptability is good, the use of the existing temporary fixing technology of the fractured end is not affected, for example, the fracture part can be further increased in the reliability of temporary fracture fixation by using the existing tools such as point type reduction forceps and the like.

4. The surgical technique is low in requirement, when the fracture is temporarily fixed by using tools such as spicules, a reset forceps and the like, the characteristics of the fracture need to be carefully studied, spicules need to be driven into a certain angle and a proper position in a short time or the reset forceps are used for clamping the broken ends of bones, good surgical technique and clinical experience are required, but in the system, only the position of a bone fracture plate is required to be determined, then spicules are driven into the bone fracture plate through a spicule guide locking assembly on the bone fracture plate, the angle and the position of the spicules do not need to be considered, in addition, the limiting piece well controls the depth of the spicules entering the bones, and the incidence rate of important structures around the spicule stabbing is reduced.

Drawings

FIG. 1 is a schematic view of a bone plate according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a bone needle according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a bone needle guiding and locking assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a guide tube according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a bone needle with an external thread structure on the surface of a shaft near the tip of the needle;

FIG. 6 is a schematic view of a bone needle guiding and locking assembly according to an embodiment of the present utility model when the locking member extends out of the wall of the guiding tube;

fig. 7 is a schematic structural view of a bone needle guiding and locking assembly provided with a sliding sleeve according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a multi-prismatic slip kit provided in an embodiment of the present utility model at an end facing away from a bone plate;

FIG. 9 is a schematic view of a semi-sectional structure of the slip kit of FIG. 8;

FIG. 10 is a schematic diagram of a semi-sectional structure of a bone needle guiding and locking assembly when a sliding sleeve member lumen provided by an embodiment of the present utility model is composed of a cylindrical lumen portion and a conical lumen portion;

FIG. 11 is a schematic diagram of a semi-sectional structure of a bone needle guiding and locking assembly when an inclined surface is provided on a portion of a locking member extending out of a guiding tube according to an embodiment of the present utility model;

fig. 12 is a schematic structural view of a guide locking assembly for a bone needle when locking is performed between a sliding sleeve member and a guide tube by a first locking member according to an embodiment of the present utility model;

FIG. 13 is a schematic view showing the mounting position of the limiting member on the bone pin according to the embodiment of the present utility model;

fig. 14 is a schematic structural diagram of a special tool provided with a polygonal prismatic limit groove structure according to an embodiment of the present utility model;

fig. 15 is a schematic structural view of a special tool provided with a polygonal prismatic limit protrusion structure according to an embodiment of the present utility model;

fig. 16 is a schematic structural view of a special tool provided with a cross-shaped limiting protrusion structure according to an embodiment of the present utility model;

FIG. 17 is a schematic view of the mounting position between a bone pin guide locking assembly and a bone plate provided by an embodiment of the present utility model;

FIG. 18 is a schematic view of the mounting position between a bone pin guide locking assembly and bone plate and target bone provided by an embodiment of the present utility model;

fig. 19 is a schematic view showing the installation position between the fixation system and the target bone according to the embodiment of the present utility model.

The bone fracture locking device comprises a 1-bone needle guiding locking component, a 11-guiding tube, a 111-locking hole, a 112-second protruding structure, a 113-first threaded structure, a 12-locking piece, a 121-first groove structure, a 13-sliding sleeve piece, a 131-cylindrical cavity part, a 132-conical cavity part, a 133-first locking hole, a 134-first locking piece, a 2-bone fracture plate, a 21-fixing through hole, a 211-second threaded structure, a 3-bone needle, a 31-needle tip, a 32-rod part, a 33-third threaded structure, a 4-limiting piece, a 41-second locking hole, a 42-second locking piece, a 5-special tool, a 51-handle, a 52-tool rod part, a 53-acting structure and a 6-bone.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the utility model with reference to the attached drawings and the preferred embodiments.

The present embodiment provides a fixation system comprising a bone plate 2, bone pins 3 and a bone pin guiding and locking assembly 1.

The bone plate 2 is provided with at least two fixing through holes 21 at intervals along the length direction, as shown in fig. 1. The fracture fixation system comprises at least two sets of bone needle guiding and locking assemblies 1 and bone needles 3, preferably two sets are arranged.

The bone pin 3 has a tip portion 31 and a shaft portion 32, respectively, in the axial direction, as shown in fig. 2. The needle tip 31 has a pyramid structure such as a triangular pyramid, a rectangular pyramid, or other polygonal pyramid. The tapered end of the needle tip 31 may be rounded to facilitate protection of vital tissue surrounding the bone 6. The tapered end of the needle tip 31 may also be sharp, which is advantageous for penetration of the bone needle 3 into the bone 6. The bone needle 3 has high implantation speed and small damage to the bone 6, lays a foundation for resetting the fracture and adjusting the position relationship between the bone 6 and the bone plate 2, and is beneficial to improving the operation quality, so the bone needle 3 becomes the best choice for replacing the screw.

The bone needle guide locking assembly 1 comprises a guide tube 11 and a locking member 12, as shown in fig. 3. The guide tube 11 is a hollow tubular structure, as shown in fig. 4. One end of the guide tube 11 is fixedly connected with the fixing through hole 21, and the guide tube 11 is vertically arranged with the bone plate 2. Preferably, the guide tube 11 is in threaded connection with the fixing through hole 21, that is, an external thread structure is disposed on a tube wall at one end of the guide tube 11, which is defined as a first thread structure 113, an internal thread structure matched with the first thread structure 113 is disposed on a hole wall of the fixing through hole 21, which is defined as a second thread structure 211, and one end of the guide tube 11 is matched with the fixing through hole 21 through the first thread structure 113 and the second thread structure 211, so that the fixing connection is realized. The bone needle 3 is arranged in the lumen of the guide tube 11. The pipe wall of the guide pipe 11 is provided with a locking hole 111, and the locking hole 111 is communicated with the pipe cavity of the guide pipe 11. The locking piece 12 is located in the locking hole 111, and the locking piece 12 can be driven to at least partially enter the lumen of the guide tube 11 to tightly press the bone needle 3. In specific implementation, the bone needle guiding and locking assembly 1 is pre-installed on the bone plate 2, and then the bone plate 2 is placed at the fracture of the target bone 6, and the bone plate 2 is attached to the target bone 6; then, one of the spicules 3 is penetrated into the guide tube 11 of one of the spicule guide locking assembly 1, and the pinpoint part 31 of the spicule is implanted on the bone 6 part at one side of fracture; the other bone needle 3 is threaded into the guide tube 11 of the other bone needle guide locking assembly 1 and its needle tip 31 is implanted onto the bone 6 portion on the other side of the fracture. After the two bone needle guiding and locking assemblies 1 respectively lock the corresponding bone needles 3, the bone fracture plate 2 can be fixed on the target bone 6. The bone needle guiding and locking assembly 1 and the bone fracture plate 2 form a locking frame structure, so that reliable temporary stability is provided for the fracture end, and a physical foundation is laid for further operation.

The surface of the bone pin 3 may be smooth or not smooth, preferably not smooth, so that the locking member 12 may better press against the bone pin 3. Further preferably, the bone needle 3 may be provided with an external thread structure on the surface of the shaft portion 32 near the needle tip portion 31, which is defined as a third thread structure 33, as shown in fig. 5, so as to increase the riveting effect of the bone needle 3 in the bone 6.

The outer side of the guide tube 11 may be smooth or non-smooth, and preferably, the outer side is non-smooth. The inner side of the guide tube 11 may be a smooth surface or a non-smooth surface, and preferably a non-smooth surface.

In one embodiment, the locking member 12 is threadably coupled to the locking aperture 111. The locking piece 12 can be driven to enter the lumen of the guide tube 11 by rotating the locking piece 12 and tightly push the bone needle 3, so that the guide tube 11 and the bone needle 3 are locked. One end of the locking member 12, which is away from the lumen of the guide tube 11, may be provided with a setting structure, so that the locking member 12 may be more conveniently rotated by a tool. For example, the setting structure may be a groove structure of a set shape, which is defined as the first groove structure 121. The first groove structure 121 may or may not extend through the locking member 12. The first groove structure 121 may be, for example, a polygonal prism groove structure as shown in fig. 3, or a quincuncial, star-shaped, cross-shaped groove structure, or the like, which can be manipulated by a tool; for another example, the setting structure may be a protrusion structure with a set shape, which is defined as a first protrusion structure. The first protruding structure may be a polygonal protruding structure, or may be a quincuncial protruding structure, a star protruding structure, a cross protruding structure, or the like, which can be manipulated by a tool.

In another embodiment, the locking member 12 is slidably disposed within the locking aperture 111. The bone needle guiding and locking assembly 1 further comprises a sliding sleeve member 13, and the sliding sleeve member 13 is of a hollow tubular structure and sleeved on the guiding tube 11, as shown in fig. 5. The locking member 12 extends outside the wall of the guide tube 11 as shown in fig. 6. The sliding sleeve member 13 can be driven to move to the locking hole 111, and the sliding sleeve member 13 drives the locking member 12 to move towards the lumen of the guide tube 11 during the moving process. The outer side of the pipe wall of the sliding sleeve member 13 may be a smooth surface or a non-smooth surface, and preferably is a non-smooth surface. The radial cross-sectional shape of at least part of the slide member 13 is preferably non-circular, such as shown in fig. 7, the slide member 13 being polygonal; as further shown in fig. 8, the end of the sliding sleeve member 13 facing away from the bone plate 2 is polygonal, etc.

In a further embodiment, the lumen of the sliding sleeve member 13 includes a cylindrical cavity portion 131 and a tapered cavity portion 132 in the axial direction, and the cylindrical cavity portion 131 communicates with a small-caliber port of the tapered cavity portion 132, as shown in fig. 9. When the sliding sleeve 13 is sleeved on the guide tube 11, the large-caliber port of the conical cavity 132 faces the locking member 12, as shown in fig. 10. When the sliding sleeve member 13 is moved to the locking hole 111, the cavity wall of the tapered cavity 132 will restrain and press the locking member 12, so as to drive the locking member 12 to move toward the lumen of the guide tube 11.

In a further embodiment, the portion of the locking member 12 extending out of the guide tube 11 is provided with an inclined surface. While the sliding sleeve member 13 may be a cylindrical cavity structure, as shown in fig. 11, the cavity wall of the sliding member will press the inclined surface to drive the locking member 12 to move toward the lumen of the guide tube 11 when the locking member 12 is driven to move to the locking hole 111. In another embodiment, the sliding member may also have a lumen formed by two parts, namely a cylindrical cavity 131 and a conical cavity 132, and when the sliding member 13 is sleeved on the guide tube 11, the large caliber port of the conical cavity 132 faces the locking member 12, and when the locking member 12 is driven to move to the locking hole 111, the cavity wall of the conical cavity 132 presses the inclined surface to drive the locking member 12 to move towards the lumen of the guide tube 11.

In each of the above embodiments, the sliding sleeve member 13 is preferably in threaded connection with the guide tube 11, and the sliding sleeve member 13 may be moved on the guide tube 11 in the axial direction by rotating the sliding sleeve member 13. Of course, the connection between the sliding sleeve member 13 and the guide tube 11 is not limited to a threaded connection, for example, the sliding sleeve may be slidably sleeved on the guide tube 11, and then locked with the sliding sleeve member 13 by a locking member. As shown in fig. 12, a locking hole is formed in the wall of the sliding sleeve member 13, which is defined as a first locking hole 133, and the first locking hole 133 is in communication with the lumen of the sliding sleeve member 13. A locking member is disposed in the first locking hole 133, which is defined as a first locking member 134. The first locking piece 134 is in threaded connection with the first locking hole 133, and the first locking piece 134 can be driven to enter the lumen of the sliding sleeve piece 13 by rotating the first locking piece 134. In a specific implementation, when the sliding sleeve member 13 slides to the locking hole 111, the locking member 12 pushes against the bone needle 3, and the first locking member 134 is rotated to enter the lumen of the sliding sleeve member 13 to push against the guide tube 11, so that the sliding sleeve member 13 and the guide tube 11 can be locked. The specific structure of the first locking member 134 can be referred to the locking member 12 described above, and will not be described herein.

In a further embodiment, the fixation system further comprises a stop 4. The limiting piece 4 is fixedly arranged on the bone needle 3, as shown in fig. 13. The size of the limiting piece 4 is larger than the inner diameter of the guide tube 11, so that when the bone needle 3 is inserted into the lumen of the guide tube 11, the limiting piece 4 is abutted with one end of the guide tube 11, and therefore the limiting effect is achieved. In practice, the operator can select the fixing position of the limiting member 4 on the bone needle 3 according to the requirement, so that the operator can control the length of the bone needle 3 driven into the bone 6 better. The limiting member 4 is preferably a hollow tubular structure. The radial cross-sectional shape of the stopper 4 may be any shape, such as a circular shape or a polygonal shape, or other non-circular shape. The lumen of the limiting member 4 may be smooth or non-smooth, preferably non-smooth. The pipe wall of the limiting piece 4 is provided with a locking hole, which is defined as a second locking hole 41, and the second locking hole 41 is communicated with the pipe cavity of the limiting piece 4. The second locking hole 41 is internally provided with a locking piece, which is defined as a second locking piece 42, the second locking piece 42 can be driven to prop against the bone needle 3 in the lumen of the limiting piece 4, so as to lock the limiting piece 4 and the bone needle 3, for example, as shown in fig. 13, the second locking piece 42 is preferably in threaded connection with the second locking hole 41, and the second locking piece 42 can be driven to enter the lumen of the limiting piece 4 and prop against the bone needle 3 by rotating the second locking piece 42. The specific structure of the second locking member 42 can be referred to the locking member 12, and will not be described herein.

In a further embodiment, the end of the guide tube 11 remote from the bone plate 2 may also be provided with a setting structure, so that the guide tube 11 may be more conveniently rotated with a tool. For example, the set structure may be a set-shaped protrusion structure, which is defined as the second protrusion structure 112. The second protrusion 112 may be, for example, a polygonal protrusion as shown in fig. 3 or fig. 4, or a quincuncial, star, cross-shaped protrusion, or the like, which can be manipulated by a tool. For another example, the setting structure may be a groove structure with a set shape, which is defined as a second groove structure. The second groove structure may be, for example, a polygonal prism groove structure, or a quincuncial, star-shaped, cross-shaped groove structure, or the like, which can be manipulated by a tool. In another further embodiment, a part of the wall of the guide tube 11 may be configured to have a non-circular radial cross-section, so that a tool may be more conveniently used to rotate the guide tube 11. For example, the radial section of the part of the guide tube 11 near the bone plate 2 is polygonal, i.e. the part of the guide tube 11 near the bone plate 2 is polygonal, and the guide tube 11 can be rotated by using a wrench or other tool through the polygonal prism.

In a further embodiment, the fixation system further comprises a special tool 5. As shown in fig. 14 to 16, a special tool 5 is schematically shown, which comprises a handle 51 and a tool shaft 52, one end of the tool shaft 52 is connected to the handle 51, and the other end of the tool shaft 52 is provided with an action structure 53. The action structure 53 may be a limit groove structure matching with the shape of the first protrusion structure on the locking member 12, as shown in fig. 14; or a limit protrusion structure matching with the shape of the first groove structure 121 on the locking member 12, as shown in fig. 15 or 16. When the locking member 12 is rotated, the limiting groove structure on the special tool 5 is sleeved on the corresponding first protrusion structure, or the limiting protrusion structure on the special tool 5 is inserted into the corresponding first groove structure 121, and then the locking member 12 can be rotated by rotating the special tool 5 along the axis. The same is true for the first locking member 134 or the second locking member 42, and the description thereof will not be repeated.

The action structure 53 may also be a limit groove structure matched with one end of the sliding sleeve member 13 facing away from the bone plate 2, and the inner diameter of the limit groove structure is larger than the size of the limit member 4. The limiting groove structure of the special tool 5 is sleeved on the sliding sleeve piece 13, and then the sliding sleeve piece 13 can be rotated by rotating the special tool 5 along the axis.

The action structure 53 may be a limit groove structure matching with the shape of the second protrusion structure 112 at one end of the guide tube 11, or a limit protrusion structure matching with the shape of the second groove structure at one end of the guide tube 11. The limiting groove structure of the special tool 5 is sleeved on the corresponding second protruding structure 112, or the limiting protruding structure on the special tool 5 is inserted into the corresponding second groove structure, and then the guide tube 11 can be rotated by rotating the special tool 5 along the axis.

The fracture fixation system of the utility model can be suitable for various fracture treatments and provides stable temporary fixation after fracture reduction. The following illustrates the use of the fixation system of the present utility model in a diaphyseal fracture surgery in conjunction with fig. 13, 17-19:

the first step: sterilizing the drape according to a standard operation flow; selecting a proper bone plate 2 and mounting two of the bone pin guide locking assemblies 1 on the bone plate 2 as shown in fig. 17; sleeving the limiting piece 4 on the spicule 3, setting the fixing position of the limiting piece 4 on the spicule 3 according to the length of the spicule 3 entering the skeleton 6, and fixing the limiting piece 4 and the spicule 3, as shown in fig. 13;

and a second step of: exposing the fracture following a standard surgical approach, placing the bone plate 2 in the appropriate location in the bone 6, as shown in fig. 18; then one of the spicules 3 is penetrated into the guide tube 11 of one of the spicule guide locking assemblies 1, and is implanted into the bone 6 part at one side of the fracture by an electric drill, and then the sliding sleeve piece 13 of the corresponding spicule guide locking assembly 1 is moved to the locking hole 111, so that a part of the corresponding locking piece 12 enters the lumen of the guide tube 11 to tightly press the spicule 3; next, the fracture alignment line is temporarily maintained by traction, a reduction forceps and the like, then the other bone needle 3 is penetrated into the guide tube 11 of the other bone needle guide locking assembly 1 and is implanted on the bone 6 at the other side of the fracture, and then the sliding sleeve member 13 of the corresponding bone needle guide locking assembly 1 is moved to the locking hole 111, so that a part of the corresponding locking member 12 enters the lumen of the guide tube 11 to tightly jack the bone needle 3, as shown in fig. 19. The bone needle 3 and the bone needle guiding and locking component 1 at two sides of the fracture and the bone fracture plate 2 form a locking structure, and the stability of the fracture part is primarily rebuilt.

And a third step of: according to the same operation flow, a plurality of bone needles 3 are driven into two sides of a fracture line, so that a more reliable structure is formed at two ends of the fracture, and the stability of fracture reduction is effectively maintained;

fourth step: the doctor observes the quality of fracture reduction through direct vision and perspective and the position relation between bones 6 on two sides of the fracture and the bone fracture plate 2; when the doctor finds that the fracture is reduced or the quality of the position of the bone fracture plate 2 is poor, the sliding sleeve member 13 of the corresponding bone needle guiding and locking assembly 1 is moved out of the locking hole 111, the locking member 12 is released, the bone needle 3 is released, and the bone needle 3 is taken out of the bone 6 by an electric drill; after resetting the fracture or adjusting the position of the bone plate 2, re-driving the spicules 3 at a new proper position by using an electric drill, and moving the sliding sleeve piece 13 of the corresponding spicule guiding and locking assembly 1 to the locking hole 111 so that a part of the corresponding locking piece 12 enters the lumen of the guiding tube 11 to tightly press the spicules 3; the quality of fracture reduction and the position relation between bones 6 at two sides of the fracture and the bone fracture plate 2 are observed through direct vision and perspective again, if the quality is poor, the actions are continuously repeated to adjust the position of the bone needle 3 until the fracture reduction and the bone fracture plate 2 have good positions;

fifth step: sequentially removing the spicules 3 and the spicule guiding and locking components 1, driving nail holes with proper diameters and depths of measuring holes into bones through corresponding fixing through holes 21 on the bone fracture plate 2 after removing one spicule 3 and one spicule guiding and locking component 1, and screwing in screws with proper lengths to finish the replacement of the screws and the spicule 3 and the spicule guiding and locking components 1; and implanting additional screws according to clinical requirements;

sixth step: and (3) confirming that the fracture reduction and internal fixation positions are good again through fluoroscopy, flushing the wound surface, and suturing the wound surface to the skin after stopping bleeding exactly.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed utility model.

The embodiments described above and features of the embodiments herein may be combined with each other without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a bone needle direction locking subassembly, its characterized in that includes stand pipe (11) and retaining member (12), stand pipe (11) are hollow tubular structure, be provided with locking hole (111) on the pipe wall of stand pipe (11), locking hole (111) with the lumen intercommunication of stand pipe (11), retaining member (12) are located in locking hole (111), retaining member (12) can be driven at least partial entering extremely in the lumen of stand pipe (11).

2. The bone needle guide locking assembly according to claim 1, characterized in that the locking member (12) is screwed with the locking hole (111).

3. The bone needle guide locking assembly according to claim 2, characterized in that the end of the locking member (12) facing away from the lumen of the guide tube (11) is provided with a first protruding structure or a first groove structure (121).

4. The bone needle guiding and locking assembly according to claim 1, further comprising a sliding sleeve member (13), wherein the sliding sleeve member (13) is of a hollow tubular structure, the sliding sleeve member (13) is arranged on the guide tube (11), the locking member (12) extends out of the outer side of the tube wall of the guide tube (11), the sliding sleeve member (13) can be driven to move to the locking hole (111), and the locking member (12) is driven to move towards the tube cavity of the guide tube (11) in the moving process of the sliding sleeve member (13).

5. The bone pin guiding and locking assembly according to claim 4, wherein the lumen of the sliding sleeve member (13) comprises a cylindrical cavity portion (131) and a conical cavity portion (132) along the axial direction, the cylindrical cavity portion (131) is communicated with the small caliber port of the conical cavity portion (132), the large caliber port of the conical cavity portion (132) of the sliding sleeve member (13) faces the locking member (12), the locking member (12) is driven to move to the locking hole (111), and the conical cavity portion (132) drives the locking member (12) to move towards the lumen of the guiding tube (11).

6. The bone needle guide locking assembly according to claim 4, wherein the portion of the sliding sleeve member (13) extending out of the guide tube (11) is provided with an inclined surface, the locking member (12) is driven to move to the locking hole (111), and the sliding sleeve member (13) presses the inclined surface to drive the locking member (12) to move towards the inner cavity of the guide tube (11).

7. The bone needle guide locking assembly according to any one of claims 4-6, characterized in that the sliding sleeve member (13) is threadedly connected to the guide tube (11).

8. The bone needle guide locking assembly according to claim 1, characterized in that the guide tube (11) is provided with a screw thread structure at one end wall.

9. The bone needle guide locking assembly according to claim 8, characterized in that the radial cross-sectional shape of the wall of the guide tube (11) portion is non-circular; and/or

The other end of the guide tube (11) is provided with a second protruding structure (112) or a second groove structure.

10. The utility model provides a fixing system, its characterized in that includes bone fracture plate (2), bone needle (3) and any one of claims 1-9 bone needle direction locking subassembly (1), be provided with fixed through-hole (21) on bone fracture plate (2), the one end of stand pipe (11) with fixed through-hole (21) fixed connection, bone needle (3) set up in the lumen of stand pipe (11), retaining member (12) can be driven get into the lumen of stand pipe (11) is pressed bone needle (3).

11. The fixation system according to claim 10, characterized in that the bone needle (3) is further provided with a stop (4).

12. The fixation system according to claim 10, further comprising a special tool (5), the special tool (5) comprising a handle (51) and a tool shaft (52), one end of the tool shaft (52) being connected to the handle (51), the other end of the tool shaft (52) being provided with an acting structure (53).