Bone grafting device under wrist arthroscope

Abstract

The utility model relates to a medical instrument, in particular to a wrist arthroscopic bone grafting instrument, which comprises an outer sheath and a core rod, the handheld ends of the outer sheath and the core rod respectively extend outwards to form a holding piece and a core disc, a piston is assembled at the aggregate pushing end of the core rod, and the distance from the core disc to the piston is larger than or equal to the length of the outer sheath. And an aggregate filling opening communicated with the inner cavity of the outer sheath is formed in the outer sheath. Compared with the prior art, the skeletal material filling opening is formed in the outer sheath, skeletal materials can be filled without pulling out the core rod, the operation steps in the operation process are simplified, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical apparatus and instruments, concretely is a kind of wrist arthroscope under bone grafting device. BACKGROUND

[0002] In orthopedic surgery, bone grafting is a common surgical procedure used to treat fractures, bone defects or nonunion, etc. Traditional bone grafting surgery usually requires bone particles to be placed at the bone grafting site, which is often a manual operation, and repeated bone holding and bone grafting actions until the bone grafting is completed.

[0003] The prior art also develops instruments specially used for bone grafting, such as the disposable bone grafting device disclosed in the utility model patent with publication number CN210228404U, which realizes bone grafting by funnel-shaped outer sleeve and push rod, but there are still some defects in actual application: ①frequent insertion and extraction of core rod: in order to fill in bone aggregate, the core rod needs to be frequently extracted, which not only reduces the surgical efficiency, but also may cause damage to the bone grafting device. ②position is easy to deviate: during the process of inserting and extracting the core rod, the position of the bone grafting device is easy to change, which affects the accuracy of bone grafting. ③long operation time: due to the need to repeatedly insert and extract the core rod, the operation time is correspondingly prolonged, which increases the burden of patients and medical staff. ④inconvenient operation: during the operation, it is difficult to accurately control the filling and pushing of bone aggregate by manually operating the bone grafting device, especially in the narrow surgical area. ⑤lack of continuous operation: the design of the existing bone grafting device limits the ability of continuous and rapid bone grafting, which affects the smoothness of the operation. UTILITY MODEL CONTENT

[0004] In order to overcome the above technical defects or one of the technical defects in the prior art, the utility model provides an improved wrist arthroscope under bone grafting device, which can fill in bone aggregate without extracting the core rod, realize continuous and rapid bone grafting, thereby improving the surgical efficiency and accuracy, reducing the operation time and patient discomfort. For this purpose, the technical scheme adopted by the utility model is as follows:

[0005] A wrist arthroscope under bone grafting device, comprising an outer sheath and a core rod, the hand-held end of the outer sheath and the core rod respectively extends outward to form a holding piece and a core disc, the bone aggregate pushing end of the core rod is equipped with a piston, the distance from the core disc to the piston is greater than or equal to the length of the outer sheath, characterized in that a bone aggregate filling port is formed on the outer sheath and communicates with the inner cavity thereof.

[0006] Further, the bone aggregate output end of the outer sheath forms a beveled tip through a bevel, the angle between the bevel and the end face where the holding piece is located is 45-60 degrees; the bone aggregate filling port is located on the opposite side of the bevel; correspondingly, the piston has a beveled tip adapted to the outer sheath.

[0007] Further, the cross-section of the core rod is non-circular, and at least one rotation-stopping groove is present; at least one rotation-stopping rib is arranged on the inner cavity wall of the hand-held end of the outer sheath, which cooperates with the rotation-stopping groove.

[0008] Further, the cross-section of the core rod is cruciform, forming four rotation-stopping grooves with right-angled triangular cross-sections, and the cross-section of the rotation-stopping rib is a sector with a central angle of a right angle.

[0009] Further, the aggregate filling inlet also serves as the inlet and outlet of the suction tube of the suction device.

[0010] Further, the outer sheath is extended outward on the side near the aggregate output end of the aggregate filling inlet to form a baffle.

[0011] Further, a tee pipe is also included, the cross pipe of the tee pipe is sleeved on the outer sheath, and the vertical pipe inner cavity of the tee pipe corresponds to the aggregate filling inlet.

[0012] Further, the vertical pipe outer end is connected to a horn.

[0013] Further, the O-shaped sealing ring is embedded in the cross pipe on both sides of the vertical pipe.

[0014] Further, a scale that penetrates into the depth of human tissue is arranged on the outer wall of the outer sheath.

[0015] Compared with the prior art, the beneficial technical effects of the present application mainly lie in the following aspects:

[0016] 1. Simplified operation steps: by arranging the aggregate filling inlet on the outer sheath, the aggregate can be filled without pulling out the core rod, which simplifies the operation steps in the surgical process and improves the surgical efficiency.

[0017] 2. Improved surgical accuracy: since the core rod does not need to be frequently pulled out and inserted, the position of the bone implanting device is more stable, which reduces the possibility of position deviation in the bone implanting process, thereby improving the accuracy of bone implanting.

[0018] 3. Shortened surgical time: the design of continuous and rapid bone implanting reduces the pause time in the surgical process, which shortens the surgical time and reduces the burden on patients and medical staff.

[0019] 4. More convenient operation: the improved design of the bone implanting device makes the operation more convenient in a narrow surgical area, especially in the case of fine operation.

[0020] 5. Improved surgical fluency: the design of continuous operation makes the bone implanting action in the surgical process more fluent, which helps to improve the overall efficiency of the surgery.

[0021] 6. Reducing the risk of damage to the bone grafting device: By reducing the number of insertions and extractions of the core rod, the risk of damage to the bone grafting device is reduced, extending the service life of the bone grafting device.

[0022] 7. Improving patient comfort: The reduction in surgery time and the stability of the operation improve the comfort of the patient, reducing the discomfort of the patient.

[0023] 8. Facilitating control of the amount of bone material: Through the design of the bone material filling port, the doctor can more conveniently control the filling amount of the bone material, ensuring the appropriateness of the bone grafting.

[0024] 9. Improving the safety of the operation: As the operation is more convenient and accurate, the safety of the operation is improved, reducing the possibility of errors during the operation.

[0025] 10. Strong adaptability: The improved design of the bone grafting device enables it to adapt to more types of bone grafting operations, including those that require bone grafting in areas that are difficult to access or have limited visibility.

[0026] In summary, the wrist arthroscopic bone grafting device of the present application can provide a more efficient, accurate, safe and user-friendly bone grafting solution for orthopedic surgery. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the outer sheath of Example 1.

[0028] Figure 2 is Figure 1 a partial enlarged view of position A in FIG.

[0029] Figure 3 is a structural schematic diagram of another view of the outer sheath of Example 1.

[0030] Figure 4 is a structural schematic diagram of the core rod of Example 1.

[0031] Figure 5 is Figure 4 a partial enlarged view of position B in FIG.

[0032] Figure 6 is a structural schematic diagram of the combination of the outer sheath and the core rod of Example 1.

[0033] Figure 7 is a structural schematic diagram of the core rod fully inserted into the outer sheath of Example 1.

[0034] Figure 8 is a structural schematic diagram of the outer sheath of Example 2.

[0035] Figure 9 is a structural schematic diagram of the outer sheath of Example 3.

[0036] Figure 10 yes Figure 9 The sectional view in the image. Detailed Implementation

[0037] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] Example 1, such as Figures 1-7 The invention relates to a wrist arthroscopic bone graft device, comprising an outer sheath 1 and a core rod 2. The handheld ends of the outer sheath 1 and the core rod 2 extend outward to form a gripping plate 11 and a core disc 21, respectively. A piston 3 is fitted to the bone material pushing end of the core rod 2. The distance from the core disc 21 to the piston 3 is greater than or equal to the length of the outer sheath 1. A bone material filling inlet 12 communicating with the inner cavity of the outer sheath 1 is provided.

[0041] The process of bone grafting using a wrist arthroscopic bone grafting device according to this embodiment:

[0042] 1. Preparation stage:

[0043] The doctor first confirms the integrity and function of a wrist arthroscopic bone graft device, checking the outer sheath 1, core rod 2, gripping plate 11, core disc 21, and piston 3 for damage. Based on the surgical requirements, the appropriate type of bone graft is prepared.

[0044] 2. Filler aggregate:

[0045] Bone material is filled into the inner cavity of the outer sheath 1 through the bone material filling inlet 12. Ensure that the bone material is filled to the appropriate height to meet surgical requirements.

[0046] 3. Surgical procedure:

[0047] During the surgery, the surgeon holds the holding plate 11 with one hand and the core plate 21 with the other. By pushing the core rod 2, the piston 3 mounted on the bone material pushing end of the core rod 2 pushes the bone material inside the core rod 2 forward. As the piston 3 moves forward, the bone material is pushed to the bone graft site through the front end of the outer sheath 1.

[0048] 4. Continuous bone grafting:

[0049] Pulling piston 3 above the bone filling inlet 12 allows for refilling with bone. The doctor can continuously push the piston without removing the core rod 2. This makes the entire bone grafting process smoother and more efficient.

[0050] 5. Surgery completed:

[0051] Once all the bone material has been delivered to the graft site, the surgery is complete. The surgeon removes an arthroscopic bone graft device and proceeds with subsequent surgical steps.

[0052] Furthermore, the bone filling inlet 12 also serves as the inlet and outlet of the suction tube. Designing the bone filling inlet 12 to simultaneously function as the inlet and outlet of the suction tube is an innovation of this invention, which improves the efficiency and convenience of the surgery. The following are some key advantages of this design:

[0053] 1. Multifunctionality: By designing the aggregate filling inlet 12 as the inlet and outlet of the suction device, multiple functions of one component are realized, simplifying the structure of the bone graft device.

[0054] 2. Reduced surgical steps: During the operation, if it is necessary to remove blood, bone fragments or other fluids from the bone graft inlet or the bone graft area, suction can be performed directly through the same inlet, reducing the need to change different tools.

[0055] 3. Improved surgical efficiency: Since bone filling and suction can be performed at the same inlet, doctors can save time during the operation and improve surgical efficiency.

[0056] 4. Easy to operate: The combination of the suction tube inlet and outlet and the bone filling inlet allows doctors to easily switch operating modes without additional accessories or complicated operations.

[0057] 5. Reduce the risk of cross-infection: The suction tube is directly connected to the bone graft, reducing the risk of liquid splashing or leakage during suction and lowering the possibility of cross-infection.

[0058] 6. Improves the cleanliness of the surgical area: It can promptly remove bone fragments or blood from the surgical area, keeping the surgical area clean and helping to improve the safety and accuracy of the surgery.

[0059] 7. Improve surgical quality: By promptly removing bone fragments or blood from the surgical area, interference with the surgical area can be reduced, thus improving the quality of the surgery.

[0060] 8. Easy to clean and disinfect: The simplified structure facilitates the cleaning and disinfection of the bone graft, reducing hard-to-clean areas.

[0061] 9. Reduced surgical costs: By reducing the number of surgical tools and accessories required, surgical costs can be reduced.

[0062] 10. Improve patient comfort: Shorter operation time and simplified procedures help improve patient comfort.

[0063] In summary, this design improves the convenience and efficiency of surgery by cleverly utilizing existing structures to achieve additional functions, while also enhancing the overall quality of the procedure.

[0064] In another preferred embodiment, the bone material output end of the outer sheath 1 is formed with a beveled tip by a bevel 13, the angle between the bevel 13 and the end face of the holding piece 11 being 45-60 degrees; the bone material filling inlet 12 is located on the opposite side of the bevel 13; correspondingly, the piston 3 has a beveled tip adapted to the outer sheath 1. The beveled tip design reduces resistance during puncture, making it easier for the outer sheath 1 to penetrate soft tissue and enter the bone graft site. The beveled tip provides a clear directional indication, helping the surgeon to more accurately control the puncture direction and depth. The beveled tip helps guide the bone material smoothly out of the outer sheath 1, reducing bone material accumulation or blockage during the output process. The sharp design of the beveled tip helps reduce damage to surrounding tissues and improves surgical safety. The beveled tip allows the bone graft device to quickly and accurately reach the bone graft site, reducing the time spent adjusting and repositioning the bone graft device. The angle between the bevel 13 and the end face of the holding piece 11 being 45-60 degrees provides good feel and grip stability. The beveled tip of piston 3 is adapted to the outer sheath 1 to ensure that the piston and the outer sheath remain sealed during the pushing process, preventing aggregate leakage.

[0065] In another preferred embodiment, the cross-section of the core rod 2 is non-circular, with at least one anti-rotation groove 22; at least one anti-rotation ridge 14, which mates with the anti-rotation groove 22, is provided on the inner wall near the handle end of the outer sheath 1. Preferably, the cross-section of the core rod 2 is cross-shaped, forming four anti-rotation grooves 22 with right-angled triangular cross-sections, and the anti-rotation ridge 14 has a fan-shaped cross-section with a right angle at its central angle. The cooperation of the anti-rotation grooves 22 and the anti-rotation ridge 14 prevents the core rod 2 from rotating during operation, thus avoiding displacement of the bone graft device due to rotation. This ensures that the oblique cutting tips of the outer sheath 1 and the piston 3 always coincide, allowing for precise alignment of the bone graft site and improving the accuracy of the bone graft. Precise control and stability help improve surgical efficiency and reduce surgical time. This design allows the bone graft device to adapt to a wider range of surgical scenarios, especially those requiring delicate manipulation.

[0066] In another preferred embodiment, a scale 15 extending deep into human tissue is provided on the outer wall of the outer sheath 1. The scale 15 provides an intuitive visual reference, helping surgeons precisely control the depth to which the bone graft is inserted into the tissue. By using the depth indicated by the scale 15, surgeons can avoid inserting the bone graft too deeply or too shallowly, reducing the risk of damage to surrounding tissues and structures. The scale 15 helps reduce estimation errors during surgery, improving the accuracy of bone grafting. Surgeons can accurately measure depth without additional tools or equipment, simplifying the surgical procedure. Precise depth control helps reduce adjustment time during surgery, improving surgical efficiency. The design of the scale 15 allows the bone graft to adapt to different depths of bone grafting, increasing its applicability. Postoperatively, surgeons can better assess the surgical outcome and the distribution of bone graft material using the depth recorded by the scale 15. For medical students and residents, the scale 15 provides an intuitive teaching tool, helping them better understand the importance of surgical depth.

[0067] Example 2, as Figure 8 As shown, everything else is the same as in Embodiment 1, except that a baffle 4 extends outward from the side of the outer sheath 1 near the bone filling inlet 12 to facilitate bone filling and prevent bone splattering. The presence of the baffle 4 provides the surgeon with a stable platform, making it easier and faster to fill the bone graft into the device. The baffle 4 prevents bone from scattering from the bone filling inlet 12 during filling or transport, keeping the surgical area clean. Because the baffle 4 helps maintain bone stability, the surgeon can complete bone filling more quickly, thereby improving the efficiency of surgical preparation.

[0068] Example 3, as Figures 9-10As shown, everything else is the same as in Embodiment 1, except that it also includes a three-way tube 5. The horizontal tube 51 of the three-way tube 5 is sleeved on the outer sheath 1, and the inner cavity of the vertical tube 52 of the three-way tube 5 corresponds to the bone filling inlet 12. By filling the vertical tube 52 with bone material, continuous pushing and pulling actions can be achieved, thereby realizing continuous delivery of bone material and improving surgical efficiency. The ability to continuously deliver material reduces the frequency of pausing during the operation to refill bone material, making the surgical procedure smoother. Doctors can easily fill and deliver bone material through the three-way tube 5 without having to operate the bone graft device multiple times, simplifying the operation steps.

[0069] In another preferred embodiment, the outer end of the vertical tube 52 is connected to a flared opening 53. The design of the flared opening 53 makes it easier to fill the vertical tube 52 with bone material, as the expanded portion of the flared opening provides a larger opening. The flared opening 53 simplifies the bone material filling process, reduces surgical preparation time, and makes the surgical procedure more efficient.

[0070] In another preferred embodiment, O-rings 54 are embedded in the horizontal tubes 51 on both sides of the vertical tube 52. This design provides better sealing performance and operational stability. Good sealing performance helps prevent cross-infection during surgery because it prevents contaminants from entering the bone graft device.

[0071] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any person skilled in the art can make many possible changes or modifications to the technical solution of the present utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present utility model. Therefore, any simple modifications, equivalent substitutions, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A wrist arthroscopic bone grafting device, comprising an outer sheath (1) and a core rod (2), the hand-held end of the outer sheath (1) and the core rod (2) respectively extend outward to form a holding piece (11) and a core disc (21), the bone material pushing end of the core rod (2) is equipped with a piston (3), the distance from the core disc (21) to the piston (3) is greater than or equal to the length of the outer sheath (1), characterized in that, An aggregate filling port (12) is formed on the outer sheath (1) and communicates with the inner cavity.

2. The wrist arthroscopic bone implanting device according to claim 1, wherein, The aggregate output end of the outer sheath (1) is formed into a bevelled tip through a bevel (13), the angle between the bevel (13) and the end face where the holding piece (11) is located is 45-60 degrees; the aggregate filling port (12) is located on the opposite side of the bevel (13); correspondingly, the piston (3) has a bevelled tip which is adapted to the outer sheath (1).

3. The wrist arthroscopic bone implanting device according to claim 2, wherein, The cross section of the core rod (2) is non-circular and has at least one rotation stopping groove (22); at least one rotation stopping rib (14) which cooperates with the rotation stopping groove (22) is arranged on the inner cavity wall near the hand holding end of the outer sheath (1).

4. The wrist arthroscopic bone implanting device according to claim 3, wherein, The cross section of the core rod (2) is cross-shaped and forms four rotation stopping grooves (22) with the cross section of right-angled triangle; the cross section of the rotation stopping rib (14) is sector-shaped and the central angle of the sector is a right angle.

5. The wrist arthroscopic bone implanting device according to claim 1, wherein The aggregate filling port (12) also serves as the inlet and outlet of the suction tube of the aspirator.

6. The wrist arthroscopic bone implanting device according to claim 1, wherein, The outer sheath (1) is outwardly extended on the side near the aggregate output end of the aggregate filling port (12) to form a baffle (4).

7. The wrist arthroscopic bone implanting device according to claim 1, wherein, A three-way pipe (5) is further included, the cross pipe (51) of the three-way pipe (5) is sleeved on the outer sheath (1), and the inner cavity of the vertical pipe (52) of the three-way pipe (5) corresponds to the aggregate filling port (12).

8. The wrist arthroscopic bone implanting device according to claim 7, wherein, The outer end of the vertical pipe (52) is connected with a horn (53).

9. The wrist arthroscopic bone implanting device according to claim 7, wherein, The cross pipe (51) on both sides of the vertical pipe (52) is embedded with an O-shaped sealing ring (54).

10. The wrist arthroscopic bone implanting device according to claim 1, wherein, A scale (15) which penetrates into the depth of human tissue is arranged on the outer wall of the outer sheath (1).

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