CN111631806A - Bone needle guiding device - Google Patents
Bone needle guiding device Download PDFInfo
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- CN111631806A CN111631806A CN202010494008.3A CN202010494008A CN111631806A CN 111631806 A CN111631806 A CN 111631806A CN 202010494008 A CN202010494008 A CN 202010494008A CN 111631806 A CN111631806 A CN 111631806A
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- receiving sleeve
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 78
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- 206010017076 Fracture Diseases 0.000 description 30
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- 238000000034 method Methods 0.000 description 7
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- 238000002594 fluoroscopy Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
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- 210000003414 extremity Anatomy 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 208000011708 Avulsion fracture Diseases 0.000 description 1
- 206010049514 Traumatic fracture Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the technical field of medical instruments and discloses a bone needle guiding device. This spicule guider includes: a handle assembly comprising a first handle portion and a second handle portion, the first and second handle portions being crossed and hinged; a receiving sleeve fixed transversely to the top end of the first handle portion; and the guide sleeve is detachably connected to the top end of the second handle part and is coaxially arranged with the receiving sleeve. Wherein, all be formed with the guiding hole that is used for the spicule to pass along the axis on receiving sleeve and the guide sleeve, the guide sleeve structure can be with the one-way propulsion of direction of receiving sleeve in the direction of being close to with the preset distance under the effect of external force after being connected with second handle portion to shorten the distance between receiving sleeve and the guide sleeve. The bone needle guiding device can improve the accuracy and convenience of bone needle guiding, so that the bone needle guiding effect is better, and various operation requirements can be effectively met.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a bone needle guiding device.
Background
Spicules, such as kirschner wires, are common internal fixation materials for orthopedics, are often used for fixing short fractures or avulsion fractures and other fractures with low stress, and can also be used for fixing temporary fracture blocks in orthopedic operations.
At present, clinically, the bone needle fixation is mainly completed by the experience technology of an operator after the reduction of various types of traumatic fractures, namely, the penetration of the bone needle is completed by using an electric drill to match with the form of the bone needle according to the hand feeling and experience of a doctor, so that the effect of fixing the fracture part is achieved. However, in actual practice, due to the state of the operator or the difference in skill level between operators, accurate positioning of the bone needle cannot be achieved only by the experience of the operator, and repeated puncturing is usually required to obtain a satisfactory fixed position. Thus, repeated adjustment may adversely affect fracture healing, which may lead to increased fracture degree, and the structure of the superficial parts of the four limbs is complicated, especially the fingers and toes contain many blood vessels, nerves, flexor tendons, ligaments, etc., and repeated puncture may easily damage blood vessels, nerves, flexor tendons, ligaments, etc., resulting in limited movement of joints of the fingers and toes, resulting in poor functional recovery of the fingers and toes, and also may cause a plurality of pinholes at the superficial parts of the four limbs, which may affect the beauty of the epidermis.
Therefore, the above-mentioned conventional bone pin fixing method for fracture reduction still has the inconvenience and defects in technical stability and popularization, and further improvement is urgently needed.
Disclosure of Invention
In order to solve all or part of the problems, the invention aims to provide a bone needle guiding device to improve the accuracy and convenience of bone needle introduction, so that the bone needle introduction effect is better, and various surgical requirements can be effectively met.
The bone needle guide device of the present invention comprises: the handle assembly comprises a first handle part and a second handle part, the first handle part and the second handle part are intersected and hinged, wherein the lower parts of the first handle part and the second handle part, which are positioned at the hinged position, are used for being held by an operator, and the upper parts of the first handle part and the second handle part, which are positioned at the hinged position, are formed with accommodating spaces for accommodating human bones; a receiving sleeve fixed transversely to the top end of the first handle portion; and the guide sleeve is detachably connected to the top end of the second handle part and is coaxially arranged with the receiving sleeve. Wherein, the receiving sleeve and the guide sleeve are both provided with a guide hole for the bone needle to pass through for guiding along the axial line, and the guide sleeve is constructed to be capable of being unidirectionally pushed in the direction close to the receiving sleeve by a preset distance under the action of external force after being connected with the second handle part so as to shorten the distance between the receiving sleeve and the guide sleeve.
Furthermore, a fixing channel used for being connected with the guide sleeve is formed on the top end of the second handle part, at least one clamping part is formed on the inner wall of the fixing channel along the circumferential direction of the fixing channel, and a tooth-shaped groove and a sliding groove connected with the tooth-shaped groove are formed on the outer circumferential wall of the guide sleeve along the length direction of the guide sleeve. Wherein, the guide sleeve can be installed to fixed passage in through the sliding fit of sliding tray and joint portion to through rotatory guide sleeve with joint portion and dentate groove cooperation, in order to form one-way propulsion under the effect of external force.
Further, the guide sleeve comprises a cylinder body in fit connection with the fixing channel and a pressing part fixedly connected to one end of the cylinder body far away from the receiving sleeve, the tooth-shaped groove and the sliding groove are formed in the outer circumferential wall of the cylinder body, and a guide hole is formed in the pressing part.
Further, the end of the guide sleeve facing the receiving sleeve is formed with an annular serration.
Furthermore, the first handle part comprises a first holding handle, a transverse guide rail section and a first longitudinal fixing section which are connected in sequence and used for an operator to hold, and the receiving sleeve is fixed at the end part of the first longitudinal fixing section; the second handle part comprises the following components in sequence: the second holding handle is used for being held by an operator, and the second holding handle is crossed with and hinged with the first holding handle; the guide sliding block is connected with the transverse guide rail section in a sliding manner and is hinged with the second holding handle; and a second longitudinal fixing section fixedly connected to the guide slider, the fixing passage being formed on the second longitudinal fixing section. The transverse guide rail section and the guide sliding block are constructed into a transverse sliding assembly, the accommodating space is formed among the first longitudinal fixing section, the transverse sliding assembly and the second longitudinal fixing section, and the sliding direction of the guide sliding block relative to the transverse guide rail section is parallel to the axis of the guide hole.
Furthermore, a strip-shaped connecting ring is formed at one end of the second holding handle connected with the guide sliding block, and a fixed shaft hinged with the strip-shaped connecting ring is arranged at one end of the guide sliding block connected with the second holding handle.
Further, the distance between the axis of the guide hole and the top end of the lateral sliding member ranges from 6cm to 9 cm.
Further, the guide hole formed on the receiving sleeve is configured as a through hole.
Furthermore, the first holding handle is of a bent structure, the second holding handle is of a straight rod structure, and protrusions for being attached to the jaw of a hand of a human body are formed on the second holding handle.
Further, the handle assembly further comprises two spring pieces respectively fixed on opposite side surfaces of the first holding handle and the second holding handle, and the two spring pieces are in elastic abutting connection.
Compared with the prior art, the bone needle guiding device has the following advantages:
1) the bone needle guiding device can accurately position the needle outlet point of the bone needle, so that the fixation of the bone needle to the fracture can be realized in one step, and the problems of side damage and aggravation of the fracture degree caused by repeated adjustment due to poor position of the bone needle can be effectively avoided;
2) the bone needle guiding device can effectively avoid important blood vessels, nerves, tendons and the like near an affected part, and avoid the side injury caused by the rotation or puncture of the bone needle;
3) the bone needle guiding device can avoid the problem of repeated puncture of a needle feeding point caused by the smoothness of the bone surface through the clamping of the receiving sleeve and the guiding sleeve after the fracture reduction;
4) the bone needle guiding device can also realize good measurement and prejudgment of the implanted length and position of the bone needle by temporarily clamping and fixing the receiving sleeve and the guiding sleeve during intraoperative fluoroscopy, thereby effectively achieving the purpose of firmly fixing the bone needle or temporarily fixing a steel plate before use and being more beneficial to the operation of an operation;
5) the spicule guiding device has the advantages of simple structure, convenience in operation and lower cost, and is suitable for being popularized and applied more widely.
Drawings
FIG. 1 is a schematic structural view of a bone pin guide device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pilot hole according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the guide sleeve shown in fig. 1.
Detailed Description
For a better understanding of the objects, structure and function of the invention, a needle guiding device according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 shows the structure of a bone needle guide 100 according to an embodiment of the present invention. As shown in fig. 1, the bone needle guide apparatus 100 includes: the handle assembly 1 comprises a first handle part 11 and a second handle part 12, wherein the first handle part 11 and the second handle part 12 are crossed and hinged, the lower part of the first handle part 11 and the second handle part 12 at the hinged part is used for being held by an operator, and the upper part of the first handle part 11 and the second handle part 12 at the hinged part is formed with a containing space 13 for containing human bones; a receiving sleeve 2, wherein the receiving sleeve 2 is transversely fixed at the top end of the first handle part 11; and a guide sleeve 3, the guide sleeve 3 being detachably attached to the tip end of the second handle portion 12, the guide sleeve 3 being disposed coaxially with the receiving sleeve 2. Wherein, the receiving sleeve 2 and the guiding sleeve 3 are respectively provided with a guiding hole 4 for the bone needle to pass through for guiding along the axial line, and the guiding sleeve 3 is configured to be capable of being pushed in a single direction along the direction close to the receiving sleeve 2 by a preset distance under the action of external force after being connected with the second handle part 12, so as to shorten the distance between the receiving sleeve 2 and the guiding sleeve 3.
In use, the needle guide 100 of the present embodiment mounts the guide sleeve 3 on the second handle portion 12 such that the co-axial guide holes 4 on the receiving sleeve 2 and the guide sleeve 3 form a passage for a needle to pass through. An operator (e.g., a doctor, a medical staff) holds the first handle portion 11 and the second handle portion 12 of the handle assembly 1, so as to place a part of bone of a fracture of a patient in the accommodating space 13, and to place the receiving sleeve 2 and the guiding sleeve 3 at two ends of the fracture of the patient. By pinching the handle assembly 1 such that the receiving sleeve 2 and the guiding sleeve 3 abut against the surface of the bone mass to form a primary fixation of the patient's fracture mass. The guide sleeve 3 of the bone needle guide device 100 of the embodiment of the invention can be pushed in a single direction at a preset distance under the action of external force after being connected with the second handle part 12, so that the bone needle guide device 100 of the embodiment of the invention has the following two use modes: one is that when the operator can not reach the receiving sleeve 2 and the guiding sleeve 3 to cling to the surface of the bone through limited holding, the distance difference can be compensated through the unidirectional propulsion of the guiding sleeve 3, so that the receiving sleeve 2 and the guiding sleeve 3 can effectively cling to the surface of the bone; in another aspect, when the fracture of the patient needs intraoperative fluoroscopy, after the operator releases the handle assembly 1, the first handle portion 11 and the second handle portion 12 are crossed and hinged, so that the operator can temporarily fix the fracture of the patient by continuously advancing the guide sleeve 3, i.e. the force applied by the operator can be released to temporarily fix the fracture of the patient for subsequent intraoperative fluoroscopy operation. After the patient is fixed on the fracture, the operator preferably uses a bone needle to pass through the guide hole 4 of the guide sleeve 3, enter the bone of the patient and then pass out to pass through the guide hole 4 of the receiving sleeve 2, so as to complete the fixation of the bone needle on the fracture of the patient.
With the above arrangement, the bone needle guiding device 100 of the embodiment of the present invention has the following advantages compared to the prior art:
1) the spicule guiding device 100 of the embodiment of the invention can accurately position a spicule outlet point through a spicule guiding channel formed by the guiding hole 4, so that the fixing of the spicule to the fracture can be realized in one step, and the problems of side damage and aggravation of the fracture degree caused by repeated adjustment due to poor position of the spicule can be effectively avoided;
2) the bone needle guiding device 100 provided by the embodiment of the invention can pre-judge the position of the bone needle penetrating through the bone of the human body through the guiding hole 4, so that important blood vessels, nerves, tendons and the like near an affected part can be effectively avoided, and the side injury caused by the rotation or puncture of the bone needle is avoided;
3) the spicule guiding device 100 of the embodiment of the invention can avoid the problem of repeated puncture of a needle inlet point caused by the smoothness of the bone surface through the clamping of the receiving sleeve 2 and the guiding sleeve 3 after the fracture reduction;
4) the bone pin guiding device 100 of the embodiment of the invention can also realize good measurement and prejudgment of the length and the position of the implanted bone pin by temporarily clamping and fixing the receiving sleeve 2 and the guiding sleeve 3 during intraoperative fluoroscopy, thereby effectively achieving the purpose of firmly fixing the bone pin or temporarily fixing a steel plate before use and being more beneficial to the operation of the operation;
5) the spicule guiding device 100 of the embodiment of the invention has the advantages of simple structure, convenient operation and lower cost, and is suitable for being popularized and applied more widely.
It should be noted that, in the present embodiment, the first handle portion 11 and the second handle portion 12 are crossed and hinged, and it should be understood that, when the guiding sleeve 3 is continuously pushed to separate the bone needle guiding device 100 of the present embodiment from the operator for use, the portions of the first handle portion 11 and the second handle portion 12 for the operator to hold can only be opened at a certain angle, that is, the first handle portion 11 and the second handle portion 12 can be formed with a limiting structure to limit the continuous opening of the first handle portion 11 and the second handle portion 12. It should be noted that the aperture size of the guiding hole 4 should be understood as the size capable of adaptively passing through and slidably fixing the bone needle (such as kirschner wire, guide wire) on the market at present, so as to play a guiding role for the bone needle, and is not limited in particular here.
Preferably, as shown in fig. 1, an end of the receiving sleeve 2 facing the guide sleeve 3 may be formed with an inclined surface 21 such that the end is configured in a pointed structure. With this arrangement, when the bone needle guiding device 100 of the embodiment of the present invention is used, it is possible to pierce the skin if necessary to allow the receiving sleeve 2 to reach the bone surface, so that the orientation of the guide hole 4 of the receiving sleeve 2 and the effect of the receiving sleeve 2 to assist in fixing the fracture site can be more facilitated.
In a preferred embodiment shown in fig. 2 and 3, a fixing passage 121 (shown in conjunction with fig. 2) for connecting the guide sleeve 3 may be formed on the top end of the second handle portion 12, an inner wall of the fixing passage 121 may be formed with at least one catching portion 122 along a circumferential direction thereof, and an outer circumferential wall of the guide sleeve 3 may be formed with a toothed groove 31 and a sliding groove 32 (shown in conjunction with fig. 3) connected to the toothed groove 31 along a length direction thereof. The guiding sleeve 3 can be installed in the fixing channel 121 through the sliding fit of the sliding groove 32 and the clamping portion 122, and the clamping portion 122 is matched with the toothed groove 31 by rotating the guiding sleeve 3, so that the unidirectional propulsion is formed under the action of external force. In this embodiment, when the guiding sleeve 3 is installed, the clamping portion 122 may be first located at the position of the sliding groove 32 of the guiding sleeve 3, so that the guiding sleeve 3 can be inserted into the fixing channel 121, and after the guiding sleeve 3 is inserted to a certain position, the guiding sleeve 3 is rotated, so that the clamping portion 122 is located in the tooth-shaped groove 31, and the clamping portion 122 is located between adjacent teeth of the tooth-shaped groove 31. In this way, by pressing the guide sleeve 3, the teeth in the tooth-shaped grooves 31 can interfere with the engagement portion 122 to achieve the stopper. When the guide sleeve 3 needs to be disassembled, the guide sleeve can be taken out by rotating reversely.
With the above arrangement, the unidirectional advancement of the guide sleeve 3: on one hand, when an operator cannot reach the situation that the receiving sleeve 2 and the guide sleeve 3 are tightly attached to the surface of the bone through limited holding, the distance difference can be made up through the unidirectional propulsion of the guide sleeve 3, so that the receiving sleeve 2 and the guide sleeve 3 can be effectively tightly attached to the surface of the bone; on the other hand, when the fracture of the patient needs intraoperative fluoroscopy, after the operator releases the handle assembly 1, the first handle part 11 and the second handle part 12 are crossed and hinged, so that the operator can continue to push the guide sleeve 3 to fix the fracture of the patient, i.e. the force can be released from the operator to fix the fracture of the patient, and then the subsequent intraoperative fluoroscopy operation can be performed. The distance between adjacent teeth of the tooth-shaped groove 31 is a preset distance, and the unidirectional thrust precision can be controlled by setting the preset distance, which is not limited specifically here.
Preferably, both the toothed grooves 31 and the sliding grooves 32 may comprise two sets formed on opposite sides of the peripheral wall of the guide sleeve 3, so that the guide sleeve 3 can be subjected to a more stable force during the pushing-in process.
In the preferred embodiment shown in fig. 1, the guiding sleeve 3 may comprise a cylinder body 33 in mating connection with the fixing channel 121 and a pressing portion 34 fixedly connected to an end of the cylinder body 33 remote from the receiving sleeve 2, the toothed groove 31 and the sliding groove 32 being formed on an outer circumferential wall of the cylinder body 33, the pressing portion 34 being formed with the guiding hole 4. Through this setting, can more do benefit to the operation of pressing of operator to guide sleeve 3 to improve the stability of pressing, in order to avoid the damage to the sclerotin that leads to because of the application of force is too big, or can't play good the fixing to fracture department because of the application of force undersize. Preferably, the surface of the pressing portion 34 may be provided with a silicone pad to improve the comfort of pressing and the anti-slip effect.
In a preferred embodiment shown in fig. 1, the end of the guide sleeve 3 facing the receiving sleeve 2 may be formed with an annular serration 35. Through this setting, annular sawtooth portion 35 can form better butt with the sclerotin surface to can avoid effectively leading to the problem that the guide sleeve 3 takes place to skid at the fixed in-process of centre gripping because of the sclerotin surface is smooth. Of course, the end of the guide sleeve 3 facing the receiving sleeve 2 can also be formed with a roughened surface to achieve the same effect.
In the preferred embodiment shown in fig. 1, the first handle portion 11 may comprise a first grip handle 111 for the operator to grip, a transverse rail section 112 and a first longitudinal fixing section 113 connected in sequence, the receiving sleeve 2 being fixed at the end of the first longitudinal fixing section 113; the second handle portion 12 may comprise, in series: a second grip handle 121 for an operator to grip, the second grip handle 121 crossing and being hinged to the first grip handle 111; a guide slider 122 slidably connected to the transverse rail section 112 and hinged to the second grip handle 121; and a second longitudinal fixing section 123 fixedly coupled to the guide slider 122, the fixing passage 121 being formed on the second longitudinal fixing section 123. Wherein the transverse guide rail section 112 and the guide slider 122 are configured as a transverse sliding assembly, the accommodating space 13 is formed between the first longitudinal fixing section 113, the transverse sliding assembly and the second longitudinal fixing section 123, and the sliding direction of the guide slider 122 with respect to the transverse guide rail section 112 is parallel to the axis of the guide hole 4. When the lateral sliding assembly in this embodiment is used, an operator grasps the first grip handle 111 and the second grip handle 121, and the second grip handle 121 can drive the guide slider 122 to move relative to the lateral guide rail section 112. The sliding direction of the guide slider 122 of the lateral sliding assembly in this embodiment relative to the lateral guide rail section 112 is parallel to the axis of the guide hole 4, so that in the process of moving the guide slider 122 relative to the lateral guide rail section 112, the receiving sleeve 2 and the guide sleeve 3 driven simultaneously can always keep coaxial, and the problem of changing the linear position of the needle inlet point and the needle outlet point along with the change of the distance between the two points is solved, so that the accuracy of the initial position of the needle inlet point and the needle outlet point can be continuously maintained by the spicule guiding device 100 in this embodiment of the present invention, so as to ensure the accuracy of the position of the spicule.
Preferably, as shown in fig. 1, one end of the second grip handle 121 connected to the guide slider 122 may be formed with a bar-shaped coupling ring 124, and one end of the guide slider 122 connected to the second grip handle 121 is provided with a fixing shaft (not shown) hinged to the bar-shaped coupling ring 124. With this arrangement, in the process that the operator pinches the first and second holding handles 111 and 121, the bar-shaped connection ring 124 can drive the fixed shaft to move along the length direction of the bar-shaped connection ring 124, and at the same time, the fixed shaft can drive the guide slider 122 to move relative to the transverse guide rail section 112, so that the moving direction of the guide slider 122 of the transverse sliding assembly can be always kept parallel to the axis of the guide hole 4.
In a preferred embodiment, the distance h (shown in connection with fig. 1) between the axis of the guide hole 4 and the top end of the lateral sliding assembly may range from 6cm to 9 cm. Preferably 7cm to 8 cm. The distance h between the axis of the guide hole 4 and the tip of the lateral sliding assembly can be understood as the longitudinal depth of the receiving space 13. Through the arrangement, the distance h between the axis of the guide hole 4 and the top of the transverse sliding assembly is more suitable for the distance h fixed in the tibial plateau fracture or closed children humeral supracondylar fracture reduction spicule, so that the operation convenience of the spicule guide device 100 of the embodiment of the invention can be effectively improved.
In a preferred method embodiment, the guide bore 4 formed in the receiving sleeve 2 can be configured as a through-bore. With this arrangement, after the bone pins have been passed through the bone and through the receiving sleeve 2, on the one hand, the bone pins can be ensured by observation of the bone pins passed through to complete the fixation of the fracture; on the other hand, when the bone needle passes through a small amount due to other reasons, the bone needle can be operated again through the guide hole 4 in the receiving sleeve 2 so as to ensure the effective fixed length of the bone needle and further ensure the stability of the fixation of the fracture. Of course, in another embodiment, the guide hole 4 formed on the receiving sleeve 2 can also be configured as a blind hole to block the bone needle from passing through excessively, so that accidental injury to important tissues or operators can be effectively avoided.
In the preferred embodiment shown in fig. 1, the first grip handle 111 may be constructed in a bent structure, and the second grip handle 121 may be constructed in a straight bar structure. Wherein, a protrusion 125 for fitting with the web of the hand of the human body can be formed on the second grip handle 121. Through the arrangement, on one hand, the first holding handle 111 is of a bent structure, and the second holding handle 121 is of a straight rod structure, so that the ergonomic holding habit is better met, and the four fingers of an operator can be pinched, held and pressurized; on the other hand, the protrusion 125 formed on the second grip handle 121 can abut against the jaw of the hand during the process of applying force by the operator, so as to further ensure the stability of gripping the bone needle guide device 100 and improve the convenience of operating the bone needle guide device 100 according to the embodiment of the present invention.
In the preferred embodiment shown in fig. 1, the handle assembly 1 may further include two spring strips 14 fixed to opposite sides of the first grip handle 111 and the second grip handle 121, respectively, the two spring strips 14 being in resilient abutment. With this arrangement, after the operator has relaxed his/her grip by the elastic contact of the two spring pieces 14, the first grip handle 111 and the second grip handle 121 can be quickly returned to their original positions, thereby further improving the convenience of the operation of the needle guide device 100. Preferably, the two spring plates 14 may be steel plate springs to simultaneously ensure the structural strength and elasticity requirements of the spring plates 14 themselves. Of course, the two spring strips 14 may be other elastic members, such as springs, etc.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "length," "axial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A bone pin guiding device, comprising:
a handle assembly including a first handle portion and a second handle portion, the first handle portion and the second handle portion being crossed and hinged, wherein a lower portion of the first handle portion and the second handle portion at the hinge is used for being held by an operator, and an upper portion of the first handle portion and the second handle portion at the hinge is formed with a receiving space for receiving human bones;
a receiving sleeve laterally secured to a top end of the first handle portion; and
the guide sleeve is detachably connected to the top end of the second handle part, and the guide sleeve and the receiving sleeve are coaxially arranged;
the receiving sleeve and the guide sleeve are respectively provided with a guide hole for a bone needle to pass through for guiding along the axis, and the guide sleeve is connected with the second handle part and can be pushed forward in a single direction along the direction close to the receiving sleeve by a preset distance under the action of external force, so that the distance between the receiving sleeve and the guide sleeve is shortened.
2. The bone needle guiding device as claimed in claim 1, wherein a fixing channel for connecting the guiding sleeve is formed on the top end of the second handle portion, the inner wall of the fixing channel is formed with at least one clamping portion along the circumferential direction thereof, the outer circumferential wall of the guiding sleeve is formed with a toothed groove and a sliding groove connected with the toothed groove along the length direction thereof, wherein the guiding sleeve can be installed into the fixing channel by sliding fit of the sliding groove and the clamping portion, and the guiding sleeve is rotated to fit the clamping portion with the toothed groove, so as to form unidirectional propulsion under the action of external force.
3. The bone needle guide device of claim 2, wherein the guide sleeve includes a cylindrical body cooperatively connected with the fixing passage and a pressing portion fixedly connected to an end of the cylindrical body remote from the receiving sleeve, the tooth-shaped groove and the sliding groove being formed on an outer circumferential wall of the cylindrical body, the pressing portion being formed with the guide hole.
4. A spicule guiding apparatus according to any one of claims 1 to 3, wherein an end of the guiding sleeve facing the receiving sleeve is formed with an annular serration.
5. The bone needle guide apparatus according to any one of claims 1 to 3,
the first handle part comprises a first holding handle, a transverse guide rail section and a first longitudinal fixing section which are connected in sequence and used for an operator to hold, and the receiving sleeve is fixed at the end part of the first longitudinal fixing section;
the second handle portion comprises, connected in series: the second holding handle is used for being held by an operator, and the second holding handle is crossed with and hinged with the first holding handle; the guide sliding block is connected with the transverse guide rail section in a sliding manner and is hinged with the second holding handle; the second longitudinal fixing section is fixedly connected to the guide sliding block, and the fixing channel is formed on the second longitudinal fixing section;
wherein the transverse guide rail section and the guide slider are configured as a transverse sliding assembly, the accommodating space is formed between the first longitudinal fixing section, the transverse sliding assembly and the second longitudinal fixing section, and the sliding direction of the guide slider relative to the transverse guide rail section is parallel to the axis of the guide hole.
6. The bone needle guiding device as claimed in claim 5, wherein a bar-shaped connecting ring is formed at one end of the second grip handle connected to the guide slider, and a fixed shaft hinged to the bar-shaped connecting ring is provided at one end of the guide slider connected to the second grip handle.
7. The needle guide assembly of claim 5, wherein the distance between the axis of the guide hole and the top end of the lateral slide assembly is in the range of 6cm to 9 cm.
8. A spicule guiding apparatus according to any one of claims 1 to 3, wherein the guiding holes formed on the receiving sleeve are configured as through holes.
9. The bone needle guide device of claim 5, wherein the first grip handle is configured as a curved structure and the second grip handle is configured as a straight rod structure, wherein a protrusion for fitting with a web of a human hand is formed on the second grip handle.
10. The needle guide apparatus of claim 5, wherein the handle assembly further comprises two spring tabs secured to opposite sides of the first and second grip handles, respectively, the two spring tabs resiliently abutting.
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| CN202010494008.3A CN111631806B (en) | 2020-06-03 | 2020-06-03 | Bone needle guiding device |
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| CN202010494008.3A CN111631806B (en) | 2020-06-03 | 2020-06-03 | Bone needle guiding device |
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| CN111631806B CN111631806B (en) | 2023-07-25 |
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Cited By (1)
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|---|---|---|---|---|
| CN113693712A (en) * | 2021-08-30 | 2021-11-26 | 浙江微度医疗器械有限公司 | Electric coagulation cutting instrument with double operating handles |
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| CN111631806B (en) | 2023-07-25 |
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