A fuser gripper

Abstract

The present invention provides a fusion device holder, comprising: an outer tube having a holding end and a connecting end, wherein the holding end of the outer tube is used for inserting onto the fusion device; a core rod disposed within the outer tube, the core rod having a mounting end and an adjusting end; a striking head having a cylindrical portion with at least one adjusting hole formed in an outer wall thereof and a striking portion for driving and extracting, the cylindrical portion being detachably connected to the connecting end of the outer tube, and the striking head being disassembled for extracting the core rod for cleaning; by providing a detachable connection between the striking head and the outer tube, when internal structures need to be cleaned after the operation, the striking head is directly disassembled, and the core rod within the tube sleeve can be directly pulled out, so that the outer tube and the core rod can be respectively cleaned, disinfected and dried. At the same time, an external hammer can also be used to strike the striking portion on the striking head to achieve striking in the direction of the implant, which is beneficial to the installation of the fusion device.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a fusion device holder Background Art

[0002] The holder of the fusion device is the most crucial tool for intervertebral fusion surgery. Currently, the commonly used holders have the problems that the inside of the cannula and the mandrel cannot be cleaned thoroughly after the operation, resulting in rusting, and they do not have the function of stably extracting the fusion device.

[0003] The current implant has an outer shape of a closed metal cannula, and the inner mandrel can rotate and axially slide inside the metal tube to achieve connection with the fusion device. Since the holder directly contacts the internal tissues of the human body, there will be a certain amount of blood stains adhering to the tool during each operation. Therefore, the conventional holder design is not conducive to cleaning and disinfecting the blood stains between the cannula and the mandrel. Also, due to the semi-closed state inside the cannula, if the instrument is not dried after cleaning, it is very easy to rust, and bacteria are likely to breed in the semi-closed space, thus reducing its service life. For this reason, a fusion device holder is proposed. Summary of the Invention

[0004] The present invention will solve the technical problems that the existing fusion device holders cannot clean and dry the inside of the mandrel and the metal tube well, and the instability of extracting the fusion device, and provide a fusion device holder.

[0005] The technical solution provided by the present invention is as follows:

[0006] A fusion device holder, comprising:

[0007] An outer tube, the outer tube has a holding end and a connection end, and the holding end of the outer tube is used to be inserted on the fusion device;

[0008] A mandrel, the mandrel is arranged inside the outer tube, and the mandrel has an installation end and an adjustment end;

[0009] A striking head, the striking head has a cylindrical portion with at least one adjustment hole opened on its outer wall and a striking portion for punching and extracting, and the cylindrical portion is detachably connected to the connection end of the outer tube;

[0010] Wherein, by rotating the adjustment end of the mandrel inside the cylindrical portion through the adjustment hole, the installation end of the mandrel is connected to or separated from the fusion device.

[0011] In this technical solution, the striking head is detachably connected to the outer tube, so that the core rod inside the outer tube can be taken out very conveniently. The inside of the outer tube can be cleaned, and at the same time, the core rod can also be cleaned. After cleaning, it is also convenient to sterilize and dry the inside of the outer tube to ensure that there are no small water droplets inside the outer tube and it is not easy to rust. At the same time, after rotating the core rod, the core rod can be connected to the fusion device. When installing the fusion device, the striking head is struck to achieve the rapid installation of the fusion device.

[0012] Preferably, a plurality of cleaning holes are provided in the peripheral wall of the outer tube.

[0013] In this technical solution, the cleaning holes provided in the peripheral wall of the outer tube facilitate the cleaning of the inside of the outer tube, making it easier to clean the blood stains inside the outer tube during the cleaning process, and at the same time, it is also easy to sterilize and dry.

[0014] Preferably, it further includes: a connection structure for connecting to the striking part; a sliding hammer assembly connected to the connection structure for driving the striking part to axially punch and pull out the fusion device.

[0015] In this technical solution, the sliding hammer assembly can be conveniently and quickly installed through the connection structure. The sliding hammer assembly punches and pulls the striking head to facilitate the installation and removal of the fusion device. At the same time, when the fusion device is punched and pulled, it is axially punched and pulled, so that the fusion device can be axially punched and pulled out from the intervertebral space. During the punching and pulling process, because the force is along the axial direction, there will be no radial swing to damage the surrounding tissues and the insert block of the holder head, increasing the stability and service life of the extraction. When in use, it can be pulled outwards or struck towards the implant direction.

[0016] Preferably, the connection structure includes: a second connection head, with a clamping groove provided on the side wall of one end of the second connection head for laterally clamping on the striking part, and an installation hole communicating with the clamping groove provided at the other end of the second connection head.

[0017] Preferably, the sliding hammer assembly includes: a sliding hammer rod inserted into the installation hole; a pin for fixing the sliding hammer rod in the installation hole; a sliding hammer sleeved on the sliding hammer rod, sliding the sliding hammer along the axial direction of the sliding hammer rod for punching and pulling out the fusion device; a stop block fixedly or detachably connected to the sliding hammer rod for limiting the sliding hammer.

[0018] In this technical solution, by sliding the sliding hammer, the sliding hammer punches and pulls outwards or strikes towards the implant direction along the sliding hammer rod. There will be no radial swing during the punching or pulling process, and it will not damage the surrounding tissues and the insert block of the holder head.

[0019] Preferably, the connecting structure further includes: a limiting ball disposed in the mounting hole, and a part of the limiting ball exposed in the engaging groove abuts against the striking part to prevent the striking part from disengaging from the engaging groove; a spring, one end of the spring abuts against the limiting ball, and the other end of the spring abuts against the sliding hammer rod.

[0020] In this technical solution, the combination of the spring and the limiting ball can keep the limiting ball always abutted against the striking head, ensuring better engagement during engagement and preventing detachment during the insertion and extraction process. At the same time, in the present invention, compared with the existing connection methods, the lateral engagement has the following advantages: First, it can ensure that the striking head can be struck even when it is not connected to the sliding hammer assembly. Second, it can ensure quick connection to the connecting structure and is not easily detached.

[0021] Preferably, it further includes: a first connector, one end of the first connector is connected to the connecting end of the outer tube, and the other end of the first connector is detachably connected to the cylindrical portion.

[0022] Preferably, it further includes: an adjusting head disposed in the cylindrical portion and connected to the adjusting end of the core rod, and the core rod is rotated by rotating the adjusting head.

[0023] Preferably, a ring-shaped protrusion extends radially along one end face of the sliding hammer away from the second connector.

[0024] Preferably, it further includes: a handle connected to the side wall of the outer tube for holding the extractor.

[0025] Compared with the prior art, a fusion extractor provided by the present invention has the following beneficial effects:

[0026] 1. In the present invention, by setting the striking head and the outer tube to be detachably connected, when internal cleaning is required after the operation, the striking head is directly disassembled, and the core rod in the tube sleeve can be directly pulled out, so that the outer tube and the core rod can be separately cleaned, disinfected, and dried. At the same time, an external hand hammer can also be used to strike the striking part on the striking head to achieve striking in the direction of the implant, which is beneficial to the installation of the fusion device.

[0027] 2. By designing a cleaning hole on the side of the outer tube, more thorough cleaning and rapid drying can be achieved. At the same time, the connection structure is combined with the sliding hammer assembly, and the connection structure is laterally engaged on the striking part, enabling quick installation. The combination of the spring and the limiting ball ensures no slippage after engagement. When the fusion device is inserted and extracted, it is inserted and extracted axially, so that the fusion device can be axially extracted from the intervertebral space. During the extraction process, since the force is along the axial direction, there will be no radial swing to damage the surrounding tissues and the insert block at the head of the extractor, increasing the stability of extraction and extending the service life. When in use, it can be pulled out or struck in the direction of the implant, which is convenient and fast. Brief Description of the Drawings

[0028] The following will further illustrate the above characteristics, technical features, advantages and implementation methods of a fuser gripper in a clear and understandable manner in combination with the drawings.

[0029] Figure 1 is a perspective structural view of a fuser gripper of the present invention;

[0030] Figure 2 is Figure 1 a sectional structural view of;

[0031] Figure 3 is a perspective external structural view of the present invention;

[0032] Figure 4 is a perspective structural view of the striking head of the present invention;

[0033] Figure 5 is a sectional structural view of the striking head of the present invention;

[0034] Figure 6 is a perspective structural view of the assembly of the connection structure and the sliding hammer assembly of the present invention;

[0035] Figure 7 is a sectional structural view of the assembly of the connection structure and the sliding hammer assembly of the present invention;

[0036] Figure 8 is a perspective external structural view of the second connector of the present invention;

[0037] Figure 9 is a sectional structural view of the first connector of the present invention;

[0038] Figure 10 is a structural view of another embodiment of the present invention;

[0039] Figure 11 is a perspective structural view of the overall assembly of the present invention;

[0040] Figure 12 is Figure 11 a structural view from another perspective of.

[0041] Explanation of the reference numerals in the drawings: core rod 1, outer tube 2, first connector 3, striking head 4, cylindrical part 401, striking part 402, adjusting head 5, handle 6, connection structure 7, second connector 701, limit ball 702, spring 703, sliding hammer assembly 8, pin 801, sliding hammer rod 802, sliding hammer 803, stop block 804. Detailed Embodiment

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.

[0043] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0044] According to an embodiment provided by the present invention, as Figure 1-2 shown, a fusion device gripper includes: an outer tube 2, the outer tube 2 has a gripping end and a connecting end, and the gripping end of the outer tube 2 is used to be inserted on the fusion device; a core rod 1, the core rod 1 is arranged inside the outer tube 2, and the core rod 1 has a mounting end and an adjusting end; when specifically implemented, as Figure 3 shown, the gripping end of the outer tube 2 is a fork-shaped insert block, and the fork-shaped insert block is used to be inserted on the fusion device. Threads are provided on the peripheral wall of the mounting end of the core rod 1, which are matched with the threaded holes on the fusion device. Adjust the core rod 1 so that the core rod 1 extends out from the middle of the fork-shaped structure at the gripping end of the outer tube 2 and continuously spirals into the fusion device until the fusion device is firmly held.

[0045] As Figure 4-5 shown, a striking head 4, the striking head 4 has a cylindrical part 401 with at least one adjusting hole opened on its outer wall and a striking part 402 for punching and pulling out. When this embodiment is implemented, two symmetrical adjusting holes are opened on the peripheral wall of the cylindrical part 401, so that when in use, the inner core rod 1 can be rotated through the two adjusting holes to realize connection or separation from the fusion device; the striking part 402 is composed of a rod-shaped structure connected to the round surface end of a disc-shaped structure. In actual production, the striking part 402 is also integrally formed with the cylindrical part 401. The striking part 402 can be used to strike with a hand hammer when the following sliding hammer assembly 8 is not connected, so that the fusion device can be quickly implanted between the vertebrae. The connecting end of the cylindrical part 401 and the outer tube 2 is detachably connected, and the cylindrical part 401 and the outer tube 2 are connected by threads. Removing the striking head 4 is used to extract the core rod 1 for cleaning; wherein, the adjusting end of the core rod 1 inside the cylindrical part 401 is rotated through the adjusting hole to connect or separate the mounting end of the core rod 1 from the fusion device.

[0046] In this embodiment, the striking head 4 is threadedly connected to the outer tube 2, enabling the removal of the striking head 4 to extract the core rod 1 for cleaning. The inside of the outer tube 2 can also be rinsed, and at the same time, disinfection and drying can be more comprehensive. When implanting the fusion device, the striking part 402 can be struck with a hammer to accelerate the entry of the fusion device between the vertebral bodies.

[0047] In another embodiment of the present invention, referring again to Figure 1-2 As shown, a plurality of cleaning holes are provided on the peripheral wall of the outer tube 2 for cleaning and drying the inner wall of the outer tube 2. Specifically, when implementing, a plurality of groups of cleaning holes are symmetrically provided on the peripheral wall of the outer tube 2. The specific number of groups can be set according to the actual situation. During use, the inside of the outer tube 2 can be cleaned and dried through the cleaning holes.

[0048] In another embodiment of the present invention, as Figure 6 shown, it further includes: a connection structure 7, the connection structure 7 is used to connect to the striking part 402; a sliding hammer assembly 8, the sliding hammer assembly 8 is connected to the connection structure 7 and is used to drive the striking part 402 to axially punch and pull out the fusion device.

[0049] When specifically implementing, as Figure 7-8 shown, the connection structure 7 includes: a second connection head 701. A clamping groove is provided on the side wall of one end of the second connection head 701 for laterally clamping on the striking part 402, and an installation hole communicating with the clamping groove is provided at the other end of the second connection head 701 away from the clamping groove for installing the sliding hammer assembly 8. In practical applications, the second connection head 701 is connected to the striking part 402 in a threaded connection manner. In this embodiment, a clamping method is preferably used.

[0050] As Figure 6-8 shown, the sliding hammer assembly 8 includes: a sliding hammer rod 802, the sliding hammer rod 802 is inserted into the installation hole; a pin 801, the pin 801 is used to fix the sliding hammer rod 802 in the installation hole. During implementation, a first pin hole is provided on the sliding hammer rod 802, and two second pin holes are symmetrically provided on the side wall of the second connection head 701. The sliding hammer rod 802 is inserted into the installation hole to align the first pin hole and the two second pin holes. The pin 801 is sequentially inserted into the second pin hole, the first pin hole, and the second pin hole to realize the connection between the second connection head 701 and the sliding hammer rod 802. After long-term use, the clamping between the second connection head 701 and the striking part 402 may become loose. At this time, the second connection head 701 can be replaced;

[0051] As Figure 6-7As shown, a slide hammer 803 is sleeved on a slide hammer rod 802 and slides axially along the slide hammer rod 802 for punching and extracting the fusion device. During implementation, anti-slip threads are provided on the outer wall of the slide hammer 803 to facilitate the operator to move the slide hammer 803. At the same time, a ring-shaped protrusion extends radially from one end face of the slide hammer 803 away from the second connector 701, enabling the operator to better drive the slide hammer 803 to move during operation.

[0052] A stop block 804 is fixedly or detachably connected to the slide hammer rod 802. In this technical solution, a detachable connection is adopted to limit the slide hammer 803. On the one hand, the stop block 804 is used to prevent the slide hammer 803 from sliding excessively. On the second hand, through the blockage of the stop block 804, the inertia of the slide hammer 803 during sliding is used to punch and extract the fusion device. Thirdly, it is to prevent the slide hammer 803 from being worn during long-term sliding, resulting in radial swing in addition to the axial force during use. At this time, the stop block 804 can be disassembled and the slide hammer 803 can be replaced.

[0053] As Figure 7 shown, the connection structure 7 further includes: a limit ball 702, which is arranged in the installation hole, and a part of the limit ball 702 exposed in the engaging groove abuts against the striking part 402 to prevent the striking part 402 from disengaging from the engaging groove; a spring 703, one end of the spring 703 abuts against the limit ball 702, and the other end of the spring 703 abuts against the slide hammer rod 802. The spring 703 always maintains a compressed state to ensure that the limit ball 702 can always abut against the striking part 402. During implementation, a limit groove is provided on the striking part 402. When the striking part 402 is stuck in the engaging groove, the limit ball 702 abuts in the limit groove to prevent the striking part 402 from detaching from the second connector 701.

[0054] In this embodiment, by connecting the second connector 701 to the striking part 402 and sliding the slide hammer 803, the fusion device can be punched and extracted along the axis from between the vertebrae. During the punching and extraction process, since the force is along the axial direction, there will be no radial swing to damage the surrounding tissues and the insert block of the holder head, increasing the stability and service life of the extraction. Moreover, the slide hammer 803 can be pulled outwards or struck towards the implant direction. During the extraction process, only by holding the slide hammer and sliding it along the rod direction can the fusion device be pulled out quickly and stably. And the surface of the slide hammer is textured to increase the friction and prevent the hand from slipping.

[0055] In another embodiment of the present invention, as Figure 9-10As shown, it further includes: a first connector 3. One end of the first connector 3 is fixedly connected to the connection end of the outer tube 2. During implementation, the outer tube 2 and the first connector 3 can be integrally formed. And an external thread is provided on the outer wall of the other end of the first connector 3, which is matched with the internal thread provided inside the cylindrical portion 401, realizing the detachable connection between the other end of the first connector 3 and the cylindrical portion 401. During use, the first connector 3 can be better connected to the cylindrical portion 401, playing a role of transitional connection, so that the outer tube 2 and the cylindrical portion 401 with different inner diameters can be well connected.

[0056] As Figure 1-2 shown, it further includes: an adjusting head 5. The adjusting head 5 is arranged inside the cylindrical portion 401 and is connected to the adjusting end of the core rod 1. By rotating the adjusting head 5, the core rod 1 is driven to rotate. During implementation, anti-slip lines are provided on the outer wall of the adjusting head 5, and the adjusting head 5 is rotated through the adjusting hole to drive the core rod 1 to rotate and connect with the fusion device, making the operation more convenient and faster.

[0057] As Figure 10 shown, it further includes: a handle 6. The handle is connected to the side wall of the outer tube 2 and is used for holding the extractor. During specific implementation, the handle 6 includes a handle inner rod. One end of the handle inner rod 6 is connected to the side wall of the outer tube 2; a handle sleeve is sleeved on the handle inner rod 6 and is used for holding the handle inner rod 6; a handle core is used to fill the space formed between the inner wall of the handle 6 and the handle inner rod 6; a sealing cap is used to connect to one end of the handle 6 far from the outer tube 2. The addition of the handle 6 enables better holding of the extractor when installing the fusion device.

[0058] As Figure 11-12 shown, by sliding the sliding hammer 803 in the sliding hammer assembly 8, the punching and pulling of the fusion device are realized. At the same time, the lateral engagement between the connection structure 7 and the striking portion 402 facilitates the disassembly of the sliding hammer assembly 8. When the sliding hammer assembly 8 is not in use, a hand hammer can also be used for striking; after use, the striking head 4 is disassembled, which can not only flush and dry the inside of the outer tube 2, but also pull out the core rod 1 for flushing and drying.

[0059] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A fuser gripper, characterized in that: including an outer tube having a gripping end and a connecting end, the gripping end of the outer tube being for insertion on a fusion device, and a plurality of cleaning holes being provided in the peripheral wall of the outer tube; a core rod disposed within the outer tube, the core rod having a mounting end and an adjusting end; a striking head having a cylindrical portion with at least one adjusting hole provided in its outer wall and a striking portion for driving and extracting, the cylindrical portion being detachably connected to the connecting end of the outer tube, and by rotating the adjusting end of the core rod within the cylindrical portion through the adjusting hole, the mounting end of the core rod is connected to or separated from the fusion device; a connecting structure for connecting to the striking portion, and the connecting structure includes a second connecting head, a clamping groove being provided in a side wall at one end of the second connecting head for laterally clamping on the striking portion, and a mounting hole communicating with the clamping groove being provided at the other end of the second connecting head; a sliding hammer assembly connected to the connecting structure for driving the striking portion to axially drive and extract the fusion device, and the sliding hammer assembly includes a sliding hammer rod, a pin, a sliding hammer, and a stop block, the sliding hammer rod being inserted into the mounting hole, the pin being for fixing the sliding hammer rod within the mounting hole, the sliding hammer being sleeved on the sliding hammer rod, sliding the sliding hammer along the axial direction of the sliding hammer rod for driving and extracting the fusion device, and the stop block being fixedly or detachably connected to the sliding hammer rod for limiting the sliding hammer; wherein, the connecting structure further includes a limiting ball and a spring, the limiting ball being disposed within the mounting hole, one end portion of the spring abutting against the limiting ball, and the other end portion of the spring abutting against the sliding hammer rod; a limiting groove being provided on the striking portion, when the striking portion is stuck within the clamping groove, a part of the limiting ball exposed within the clamping groove abuts within the limiting groove to prevent the striking portion from disengaging from the clamping groove.

2. The fusion device gripper according to claim 1, characterized in that: Further included is: a first connecting head, one end portion of the first connecting head being connected to the connecting end of the outer tube, and the other end portion of the first connecting head being detachably connected to the cylindrical portion.

3. The fusion device gripper according to claim 1, characterized in that: Further included is: an adjusting head disposed within the cylindrical portion and connected to the adjusting end of the core rod, driving the core rod to rotate by rotating the adjusting head.

4. The fusion device gripper according to claim 1, characterized in that: A ring-shaped protrusion extends radially from an end face of the sliding hammer away from the second connecting head.

5. The fusion device gripper according to claim 1, wherein: Further included is: a handle connected to the side wall of the outer tube for gripping the extractor.

Images