Connecting rod clamp and rod holder for spinal surgery

Abstract

The application discloses a connecting rod clamp and a rod holder for spinal surgery, and the connecting rod clamp comprises a connecting rod provided with a sliding block and a cavity with a front opening, a threaded hole penetrating the connecting rod from top to bottom and communicating with the cavity is arranged at the upper portion of the connecting rod, the sliding block is provided with two sliding blocks which are symmetrical to the two inner side walls of the cavity, the lower end of the sliding block and the lower inner wall of the cavity form a connecting rod insertion port, and the upper end of the sliding block and the upper inner wall of the cavity form an insertion port; the clamping rod extends along the up and down directions and is provided with a sliding groove at both ends, the sliding groove is connected with the sliding block to make the clamping rod move up and down, the upper end of the clamping rod is provided with a clamping groove with a rear opening, the clamping groove penetrates the upper surface of the clamping rod, and the length of the clamping rod is equal to or smaller than the length of the insertion port; the locking rod extends along the up and down directions and is provided with a threaded part connected with the threaded hole at both ends, and the lower end of the locking rod is clamped with the clamping groove. The application realizes quick disassembly of the clamping rod from the connecting rod, facilitates removal of residual stains in the connecting rod clamp, and realizes disassembly, cleaning and convenient storage of the connecting rod clamp.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a connecting rod clamp and rod holder for spinal surgery. Background Technology

[0002] In minimally invasive spinal surgery, percutaneous pedicle screws are inserted percutaneously, without completely cutting and exposing the screws. As mentioned earlier, the insertion of connecting rods in minimally invasive spinal surgery is done using special rod-holding tools. By holding the rods and allowing them to pass through the skin and muscle tissue, they are inserted between two or more pedicle screws, ultimately completing the fixation of the spinal pedicle screw-rod system.

[0003] Currently, there are many spinal minimally invasive rod holders on the market, but they generally suffer from the following problems: The rod holder is not a disposable tool. After surgery, residual blood and tissue debris inside the rod holder can prevent the locking device from properly repositioning, hindering the removal of the connecting rod and affecting the surgical procedure. Furthermore, the one-piece design makes it difficult to thoroughly clean the rod holder, potentially leading to incompletely cleaned tissue debris or blood falling into other patients' bodies during subsequent surgeries. Therefore, developing a detachable and washable rod holder is essential.

[0004] Furthermore, if conventional disassembly methods are used to disassemble the rod holder, the detachable parts are prone to being lost during the disassembly, cleaning, and reassembly process, rendering the device unusable. Therefore, it is necessary to use appropriate technical means to enable the rapid disassembly, installation, and storage of the rod holder during intermediate stages. Summary of the Invention

[0005] The purpose of this invention is to provide a connecting rod clamp for spinal surgery that enables rapid disassembly and assembly, thereby addressing one or more technical problems existing in the prior art. Furthermore, this invention also provides a rod holder comprising the aforementioned connecting rod clamp for spinal surgery.

[0006] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0007] In a first aspect, the present invention discloses a connecting rod clamp for spinal surgery, comprising:

[0008] A connecting rod has a cavity with an opening facing forward. The upper part of the connecting rod has a screw hole with its axis extending vertically. The screw hole communicates with the cavity. The connecting rod has two sliders, which are symmetrically arranged on the two inner side walls of the cavity. The lower end of the slider forms a connecting rod insertion port with the lower inner wall of the cavity, and the upper end of the slider forms an insertion port with the upper inner wall of the cavity.

[0009] A clamping rod extends vertically at both ends. The clamping rod is provided with a sliding groove, which is slidably connected to the slider so that the clamping rod can move vertically relative to the connecting rod. The upper end of the clamping rod is provided with a rearward-facing slot, which penetrates the upper surface of the clamping rod. The length of the clamping rod is equal to or less than the length of the insertion port.

[0010] A locking rod extends vertically at both ends, and the locking rod has a threaded portion that connects to the threaded hole. The lower end of the locking rod engages with the slot.

[0011] The present invention has at least the following beneficial effects: the connecting rod is provided with a cavity and a slider; the clamping rod is connected to the slider through a groove, enabling it to move smoothly and linearly relative to the connecting rod without wobbling; the locking rod is engaged with the clamping rod; when the locking rod is screwed into the threaded hole of the connecting rod through the threaded part, the locking rod can drive the clamping rod to move downward, thereby causing the clamping rod to apply a clamping action on the connecting rod located at the insertion port of the connecting rod, so that the connecting rod is fixed relative to the connecting rod clamp; after the rod is installed, the locking rod is turned in the opposite direction, and the locking rod drives the clamping rod to move upward, releasing the force of the clamping rod on the connecting rod; since the length of the clamping rod is equal to or less than the length of the insertion port, after the locking rod moves the clamping rod to the position, the clamping rod separates from the slider, and the locking rod and the clamping rod are engaged in the groove, so that the clamping rod can be directly removed from the insertion port, thereby realizing the quick installation and removal of the clamping rod from the cavity of the connecting rod, which facilitates the removal of blood and human tissue debris remaining in the cavity.

[0012] Secondly, the present invention provides a rod holder, comprising: a handle; a first link, one end of which is connected to one end of the handle; a second link, one end of which is connected to the other end of the first link; and a connecting rod clamp for spinal surgery as described above, wherein the connecting rod clamp's connecting rod is connected to the other end of the second link.

[0013] The present invention has at least the following beneficial effects: the handle, the first connecting rod, the second connecting rod and the connecting rod clamp are connected in sequence. When the connecting rod clamp applies a clamping action on the connecting rod, it is convenient for the user to hold the handle and send the connecting rod into the patient's body. Moreover, after the operation, it is convenient for the user to quickly remove the clamping rod from the connecting rod and effectively clean the connecting rod and the clamping rod, so as to prevent residual blood and human tissue debris from falling into other patients' bodies in subsequent operations.

[0014] As a further improvement to the above technical solution, the handle includes a first housing and a second housing, which are detachably connected. The first housing has a first groove, and the second housing has a second groove. The first groove and the second groove together form a storage cavity. The connecting rod is hinged to the second connecting rod, the second connecting rod is hinged to the first connecting rod, and the first connecting rod is hinged to the first housing. A first locking structure is provided between the first connecting rod and the second connecting rod to lock the first connecting rod and the second connecting rod. A second locking structure is provided between the second connecting rod and the connecting rod to lock the second connecting rod and the connecting rod.

[0015] The connecting rod and the second link, the second link and the first link, and the first link and the first housing are all hinged. The first and second housings are detachably connected, allowing the connecting rod, the second link, and the first link to fold and be stored in the storage cavity formed by the first and second housings. This enables the stick holder to be quickly disassembled, folded, and stored, greatly saving space and facilitating storage, packaging, and transportation, thus significantly reducing transportation costs. By setting a first locking structure and a second locking structure, the connecting rod and the second link can be locked after they are fully extended. After the first and second housings are connected, they clamp the first link, fixing it relative to the handle, making it convenient for the user to use the stick holder for stick placement.

[0016] As a further improvement to the above technical solution, the rod holder also includes a first screw and a second screw. The first connecting rod is provided with a first threaded hole, the second connecting rod is provided with a second threaded hole and a first connecting hole, the connecting rod is provided with a second connecting hole, the first screw passes through the first connecting hole and the first threaded hole, the first screw, the first connecting hole and the first threaded hole form the first locking structure, the second screw passes through the second connecting hole and the second threaded hole, the second screw, the second connecting hole and the second threaded hole form the second locking structure.

[0017] The first link is hinged to the second link, and the second link is hinged to the connecting rod. By screwing the first screw into the first connecting hole and the first threaded hole of the second link, the first link is fixed relative to the second link. By screwing the second screw into the second connecting hole and the second threaded hole of the connecting rod, the second link is fixed relative to the connecting rod. This makes it convenient for the user to use the stick holder to perform the stick placement operation. When the stick placement is finished and the stick holder needs to be folded and stored, the locking action of the first and second screws is released by unscrewing them, allowing the first link and the connecting rod to be folded. After disconnecting the first and second housings, the connecting rod clamp, the second link, and the first link can be stored in the storage cavity of the handle, saving the space required for storing the stick holder.

[0018] As a further improvement to the above technical solution, both the first screw and the second screw are provided with a gripping part, and the outer peripheral surface of the gripping part is provided with anti-slip texture. The first screw and the second screw are both provided with anti-slip textured gripping parts, allowing the user to manually tighten the first screw and the second screw without the need for tools, thus greatly improving the user's operational convenience.

[0019] As a further improvement to the above technical solution, the left and right sides of the connecting rod are provided with snap-fit ​​grooves, which penetrate the rear side of the connecting rod; the second connecting rod includes a second rod body and a snap-fit ​​component, the second rod body is hinged to the connecting rod, the snap-fit ​​component includes a snap-fit ​​strip and a connecting block, two snap-fit ​​strips are provided and arranged in parallel, one end of the two snap-fit ​​strips is connected to the connecting block, and the other end of the two snap-fit ​​strips can be inserted into the two snap-fit ​​grooves respectively. The left and right sides of the second rod body are provided with limiting grooves, and the two limiting grooves are slidably connected to the two snap-fit ​​strips respectively. The snap-fit ​​component and the snap-fit ​​grooves form the second locking structure.

[0020] The connecting rod is hinged to the second rod body, and the locking piece is slidably connected to the second rod body, allowing the locking strip to move linearly along the limiting groove. After adjusting the position of the connecting rod relative to the second rod body, the locking strip moves downward relative to the second rod body until it inserts into the locking groove on the connecting rod, thus locking the connecting rod. Two locking strips and two locking grooves are provided to enhance the locking effect and ensure smooth rod placement. The connecting block allows the user to easily move it upwards to disengage the locking strip from the locking groove, releasing the lock and allowing the connecting rod to fold relative to the second rod body. This design eliminates the need for tedious screw tightening, reducing operational difficulty, improving efficiency, and significantly enhancing user satisfaction with the rod holder.

[0021] As a further improvement to the above technical solution, the first connecting rod includes a first rod body and a movable rod. One end of the first rod body is hinged to the first housing, and the other end of the first rod body is hinged to the second rod body. The movable rod is located above the first rod body and is slidably connected to the first rod body. One end of the movable rod is hinged to the second housing, and the other end of the movable rod is provided with a limiting block. The limiting block is adapted to and connected to the second rod body and the connecting block respectively, so that the snap-fit ​​member is fixed relative to the second rod body and the second rod body is fixed relative to the first rod body. The movable rod and the limiting block form the first locking structure.

[0022] The first and second rods are hinged together. A movable rod is positioned above the first rod and slidably connected to it. The movable rod is equipped with a limiting block. After the locking piece is inserted into the locking groove of the connecting rod, the connecting block moves down into place. Then, the position of the second rod relative to the first rod is adjusted, and the movable rod is made to move linearly relative to the first rod so that the limiting block contacts the second rod and the connecting block respectively. The limiting block can limit the second rod and the connecting block, preventing the second rod from rotating relative to the first rod, thus creating a strong locking effect between the second rod and the first rod. At the same time, the connecting block cannot move upward, ensuring that the locking strip is always locked in the locking groove. This improves the working stability of the rod holder and effectively prevents the locking strip from coming out of the locking groove due to the movement of the connecting block during the rod placement process, which would cause the connecting rod to move relative to the second rod and ultimately affect the rod placement operation.

[0023] As a further improvement to the above technical solution, the second rod body is provided with a sliding block, one end of which is hinged to the connecting rod. The second rod body is provided with an upward-facing limiting groove, which is located above the limiting slot. The sliding block is located in the limiting groove and can slide along the length direction of the second rod body.

[0024] The sliding block is hinged to the connecting rod, and the sliding block is slidably connected to the limiting slot of the second rod, which enables the sliding block to move linearly relative to the second rod with the connecting rod. When the connecting rod is folded and stored, the position of the connecting rod relative to the second rod can be adjusted, thereby ensuring that the connecting rod, the first connecting rod and the second connecting rod can be folded and stored in the storage cavity inside the handle, and avoiding the handle from being too long, thus saving materials.

[0025] As a further improvement to the above technical solution, the upper end of the limiting slot is an open structure. The open structure at the upper end of the limiting slot allows the sliding block to be disengaged from the limiting slot, and the connecting rod clamp to be detached from the second rod body. This facilitates separate cleaning of the connecting rod clamp. Furthermore, after disassembly, the connecting rod clamp can be stored together with the second and first connecting rods in the handle's storage cavity, preventing the handle from becoming too tall.

[0026] As a further improvement to the above technical solution, the stick holder also includes a magnetic block and a locking block. The first housing and the second housing are slidably connected. The rear end of the second housing is provided with a through hole, and the rear end of the first housing is provided with an upward-facing receiving groove. One of the magnetic block and the locking block is disposed in the receiving groove, and the other of the magnetic block and the locking block passes through the through hole and is inserted into the receiving groove. The magnetic block and the locking block are magnetically connected.

[0027] The first housing and the second housing are slidably connected. When the first housing slides into position relative to the second housing, the through hole of the second housing and the receiving groove of the first housing are aligned and connected. The card block can then pass through the through hole and be inserted into the receiving groove to connect with the magnetic block. The magnetic force generated by the magnetic block ensures a tight connection between the card block and the magnetic block, preventing the card block from exiting from the through hole without external force, which would cause the connection between the first housing and the second housing to be broken. This design allows users to manually operate the card block without using tools, enabling the rapid establishment or disengagement of a stable connection between the first housing and the second housing. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0029] Figure 1 This is an exploded view of the connecting rod clamp provided in an embodiment of the present invention;

[0030] Figure 2 This is a cross-sectional schematic diagram of the connecting rod clamp provided in an embodiment of the present invention;

[0031] Figure 3 This is a three-dimensional structural view of the connecting rod provided in an embodiment of the present invention;

[0032] Figure 4 This is a perspective view of the locking rod provided in an embodiment of the present invention;

[0033] Figure 5 This is a perspective view of the clamping rod provided in an embodiment of the present invention;

[0034] Figure 6 This is a three-dimensional structural view of the rod holder provided in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the connection between the second connecting rod and the connecting rod clamp provided in an embodiment of the present invention;

[0036] Figure 8 This is an exploded view of the structure of the first connecting rod provided in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the internal structure of the stick holder provided in an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the internal structure of the stick holder provided in another embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure of a rod holder provided in another embodiment of the present invention.

[0040] The following labels are used in the attached diagram: 100, connecting rod clamp; 110, connecting rod; 111, screw hole; 112, cavity; 113, slider; 120, clamping rod; 121, slot; 122, slide groove; 123, tip; 130, locking rod; 131, threaded part; 132, head; 133, snap-fit ​​part; 140, connecting rod insertion port; 150, snap-fit ​​groove;

[0041] 200, Second connecting rod; 210, Second rod body; 211, Limiting groove; 212, Limiting slot; 213, Abutting surface; 214, Contact surface; 220, Sliding block; 230, Snap-fit ​​piece; 231, Connecting block; 232, Snap-fit ​​strip; 233, Inclined surface; 300, First connecting rod; 310, Moving rod; 311, Limiting block; 312, Second hinge shaft; 320, First rod body; 321, Slide rail; 322, First hinge shaft; 323, Hinge part; 410, First housing; 420, Second housing; 430, Snap-fit ​​block; 440, Opening; 510, Second screw; 520, First screw. Detailed Implementation

[0042] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0044] In the description of this invention, the use of terms such as "a number" means one or more, with "more than" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while terms like "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0045] It should be noted that in the attached diagram, the X direction points from the rear to the front of the connecting rod clamp; the Y direction points from the left to the right of the connecting rod clamp; and the Z direction points from the bottom to the top of the connecting rod clamp.

[0046] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0047] Reference Figures 1 to 11 The following are several embodiments of the connecting rod clamp and rod holder for spinal surgery of the present invention.

[0048] like Figures 1 to 5 As shown, this embodiment of the invention provides a connecting rod clamp for spinal surgery. The connecting rod clamp 100 includes a connecting rod 110, a clamping rod 120, and a locking rod 130. The connecting rod 110, clamping rod 120, and locking rod 130 can be made of metal materials such as stainless steel or titanium alloy.

[0049] The connecting rod 110 extends vertically at both ends and has a cavity 112 with its opening facing forward. In this embodiment, the cavity 112 is rectangular. The upper part of the connecting rod 110 has a screw hole 111, the axis of which extends vertically and communicates with the cavity 112. The connecting rod 110 has a slider 113, two of which are symmetrically arranged on the two inner walls of the cavity 112. The slider 113 is strip-shaped, with both ends extending vertically. One slider 113 is located on the inner left wall of the cavity 112, and the other slider 113 is located on the inner right wall of the cavity 112. The slider 113 is integrally formed with the connecting rod 110.

[0050] The slider 113 is located at the lower part of the cavity 112. The lower end of the slider 113 forms a connecting rod insertion port 140 with the lower inner wall of the cavity 112, which allows the connecting rod to be inserted. The upper end of the slider 113 forms an insertion port with the upper inner wall of the cavity 112, which allows the clamping rod 120 to be placed directly in the insertion port.

[0051] The clamping rod 120 extends vertically at both ends and is provided with a sliding groove 122. The sliding groove 122 is slidably connected to the slider 113 so that the clamping rod 120 can move vertically relative to the connecting rod 110. In this embodiment, the left and right sides of the clamping rod 120 are recessed to form the sliding groove 122, and the two ends of the sliding groove 122 extend vertically. The upper end of the clamping rod 120 is provided with a rearward-opening slot 121 that penetrates the upper surface of the clamping rod 120.

[0052] The length of the clamping rod 120 is equal to or less than the length of the insertion port (that is, the height distance between the upper surface of the slider 113 and the inner upper wall of the cavity 112). After the clamping rod 120 moves upward relative to the connecting rod 110 into place, the sliding groove 122 of the clamping rod 120 separates from the slider 113, so that the clamping rod 120 is not restricted by the slider 113, making it easy to remove the clamping rod 120 from the cavity 112. This makes it convenient for the user to thoroughly clean the cavity 112 and the clamping rod 120, effectively removing residual blood and human tissue debris.

[0053] The lower end of the clamping rod 120 is a tip 123, and the lower end of the connecting rod 110 protrudes forward to form a support part. After the clamping rod 120 moves down into place, the tip 123 will apply a downward pressure force to the connecting rod, and the support part will provide support to the connecting rod, thereby enabling the connecting rod clamp 100 to firmly clamp the connecting rod.

[0054] The locking rod 130 extends vertically at both ends. The upper end of the locking rod 130 is the head 132. The head 132 is provided with an internal angle hole, such as an internal hexagonal hole, to facilitate the use of an internal angle wrench to rotate the locking rod 130. The locking rod 130 is provided with a threaded part 131, which is located below the head 132 and is connected to the threaded hole 111.

[0055] The lower end of the locking rod 130 engages with the slot 121. Specifically, the lower end of the locking rod 130 is a engaging portion 133. In this embodiment, the engaging portion 133 includes a first cylinder and a second cylinder connected sequentially from top to bottom, with the diameter of the first cylinder being smaller than the diameter of the second cylinder. Correspondingly, the shape of the slot 121 is adapted to the engaging portion 133. Specifically, the cross-sectional shape of the slot 121 is semi-circular.

[0056] When the locking rod 130 is rotated, it can move up or down relative to the connecting rod 110. Under the action of the locking rod 130, the clamping rod 120 can move linearly in the up-down direction relative to the connecting rod 110. When the rotation of the locking rod 130 stops, the connection between the threaded part 131 and the threaded hole 111 causes both the locking rod 130 and the clamping rod 120 to be fixed relative to the connecting rod 110, thereby allowing the clamping rod 120 and the connecting rod 110 to firmly clamp the connecting rod.

[0057] After the locking rod 130 moves upward with the clamping rod 120 into position, the clamping rod 120 separates from the slider 113. At this time, the clamping rod 120 can be pulled forward, causing the locking part 133 of the locking rod 130 to exit from the slot 121 of the clamping rod 120.

[0058] The connecting rod clamp 100 provided in this embodiment of the invention adopts the above-described structural design, which enables the clamping rod 120 to be quickly attached and detached from the connecting rod 110 and to be quickly disconnected from the locking rod 130, making it convenient to remove blood and human tissue debris remaining in the cavity 112.

[0059] In addition, such as Figures 6 to 11 As shown, this embodiment of the invention also provides a rod holder, including: a handle, a first link 300, a second link 200, and a connecting rod clamp 100 for spinal surgery as described in the above embodiment.

[0060] The handle can have a circular or square cross-sectional shape for easy gripping. One end of the first link 300 is connected to one end of the handle, and one end of the second link 200 is connected to the other end of the first link 300. The connecting rod 110 of the connecting rod clamp 100 is connected to the other end of the second link 200. The first link 300 and the second link 200 are arranged at an angle. In this embodiment, after the first link 300 and the second link 200 are connected, the included angle between the first link 300 and the second link 200 is an obtuse angle. When using the rod holder, the connecting rod clamp 100 is vertically positioned, while the handle and the first link 300 are horizontally positioned.

[0061] After the connecting rod clamp 100 applies a stable clamping action to the connecting rod, it is convenient for the user to hold the handle and send the connecting rod into the patient's body. Moreover, after the operation, it is convenient for the user to quickly remove the clamping rod 120 from the connecting rod 110 of the connecting rod clamp 100, and effectively clean the connecting rod 110 and the clamping rod 120 to prevent residual blood and human tissue debris from falling into the bodies of other patients in subsequent operations.

[0062] Furthermore, in order to address the technical problem that the detachable parts of the stick holder are easily lost during disassembly, cleaning, and reassembly, thus rendering the device unusable, the stick holder adopts a foldable storage structure design to achieve quick disassembly and storage, save space occupied by the stick holder, and facilitate storage, packaging, and transportation.

[0063] Specifically, the handle includes a first housing 410 and a second housing 420, which can be made of metal or plastic. The first housing 410 and the second housing 420 are detachably connected, for example, by screws or snap-fit ​​structures. The first housing 410 has a first groove, and the second housing 420 has a second groove; the first and second grooves together form a storage cavity. In this embodiment, the first housing 410 is located below the second housing 420, the opening of the first groove faces upward, and the opening of the second groove faces downward.

[0064] Furthermore, the connecting rod 110 is hinged to the second connecting rod 200, the second connecting rod 200 is hinged to the first connecting rod 300, and the first connecting rod 300 is hinged to the first housing 410. It can be understood that the above-mentioned hinge methods are all achieved by setting a hinge axis, which enables the connecting rod clamp 100 to fold relative to the second connecting rod 200, the second connecting rod 200 to fold relative to the first connecting rod 300, and the first connecting rod 300 to fold relative to the first housing 410. This allows the connecting rod clamp 100, the second connecting rod 200, and the first connecting rod 300 to be stored in the storage cavity formed by the first housing 410 and the second housing 420, which greatly saves the space occupied by the rod holder.

[0065] A first locking structure is provided between the first link 300 and the second link 200 to lock the first link 300 and the second link 200. A second locking structure is provided between the second link 200 and the connecting rod 110 to lock the second link 200 and the connecting rod 110. By setting the first locking structure and the second locking structure, the connecting rod 110 and the second link 200 can be locked after they are fully extended. After the first housing 410 and the second housing 420 are connected, the first housing 410 and the second housing 420 clamp the first link 300, fixing the first link 300 relative to the handle, which facilitates the user to use the rod holder for rod placement.

[0066] In some embodiments, such as Figure 11 As shown, the rod holder also includes a first screw 520 and a second screw 510. The first connecting rod 300 has a first threaded hole, the second connecting rod 200 has a second threaded hole and a first connecting hole, and the connecting rod 110 has a second connecting hole. The axes of the first threaded hole, the second threaded hole, the first connecting hole, and the second connecting hole all extend in the left-right direction. The first connecting hole and the second connecting hole can be holes with internal threads or holes with smooth walls.

[0067] Since the first connecting rod 300 is hinged to the second connecting rod 200, passing the first screw 520 through the first connecting hole and the first threaded hole will fix the first connecting rod 300 relative to the second connecting rod 200, preventing it from folding. At this time, the first screw 520, the first connecting hole, and the first threaded hole form a first locking structure. Since the second connecting rod 200 is hinged to the connecting rod 110, passing the second screw 510 through the second connecting hole and the second threaded hole will establish a locking relationship between the second connecting rod 200 and the connecting rod 110, preventing the connecting rod 110 from folding. At this time, the second screw 510, the second connecting hole, and the second threaded hole form a second locking structure.

[0068] In this embodiment, a screwdriver can be used to tighten the first screw 520 and the second screw 510.

[0069] In order to operate the first screw 520 and the second screw 510 without the need for tools, both the first screw 520 and the second screw 510 are provided with a grip. The grip is cylindrical and the outer circumferential surface of the grip is provided with anti-slip texture. That is, the first screw 520 and the second screw 510 are hand-tightening screws.

[0070] In some other embodiments, the second connecting rod 200 is provided with a first connecting portion, and the first connecting portion is provided with a first bayonet instead of a first connecting hole. The connecting rod 110 is provided with a second connecting portion, and the second connecting portion is provided with a second bayonet instead of a second connecting hole. The first bayonet and the second bayonet can be semi-circular.

[0071] The first screw 520 is threadedly connected to the first connecting rod 300, and the second screw 510 is threadedly connected to the second connecting rod 200. When locking, the first latch can be inserted into the gap between the first screw 520 and the first connecting rod 300, and the second latch can be inserted into the gap between the second screw 510 and the second connecting rod 200. Then, the first screw 520 and the second screw 510 are tightened. The clamping force of the first screw 520 and the second screw 510 causes the first connecting part to be tightly clamped in the gap between the first screw 520 and the first connecting rod 300, and the second connecting part to be tightly clamped in the gap between the second screw 510 and the second connecting rod 200.

[0072] With this design, it is not necessary to completely unscrew the first screw 520 and the second screw 510 to achieve the folding of the second link 200 and the connecting rod 110.

[0073] In some other embodiments, the second link 200 is provided with a hook, and correspondingly, the first link 300 is provided with a locking part. When the first link 300 and the second link 200 are hinged, the locking part and the hook are connected by a corresponding snap-fit, thereby fixing the second link 200 and the first link 300 together. Since the locking part and the hook replace the first screw 520 and the first latch, the second link 200 swings into position and drives the hook and the locking part to snap together, thus connecting the second link 200 and the first link 300. When folded and stored, the second link 200 is forcefully driven to swing in the opposite direction to release the snap-fit ​​between the hook and the locking part.

[0074] In addition, the snap-fit ​​structure between the second link 200 and the connecting rod 110 is the same as described above, and will not be repeated here.

[0075] In some other embodiments, such as Figures 6 to 10 As shown, the stick holder adopts a unique structural design to achieve the function of foldable storage.

[0076] Specifically, the left and right sides of the connecting rod 110 are provided with snap-fit ​​grooves 150, which penetrate the rear side of the connecting rod 110.

[0077] Furthermore, the second connecting rod 200 includes a second rod body 210 and a snap-fit ​​member 230. The second rod body 210 is hinged to the connecting rod 110. In this embodiment, the snap-fit ​​groove 150 is located below the hinge point of the connecting rod 110 and the second rod body 210.

[0078] The snap-fit ​​component 230 includes a snap-fit ​​strip 232 and a connecting block 231. The length direction of the snap-fit ​​strip 232 is consistent with the length direction of the second rod 210. There are two snap-fit ​​strips 232 arranged in parallel. One end of each snap-fit ​​strip 232 is connected to the connecting block 231. When the connecting block 231 is moved, it can simultaneously drive the two snap-fit ​​strips 232 to move linearly. The other end of each snap-fit ​​strip 232 can be inserted into the two snap-fit ​​slots 150 of the connecting rod 110, respectively.

[0079] The second rod 210 has limiting grooves 211 on both its left and right sides. The length direction of the limiting grooves 211 is consistent with the length direction of the second rod 210, and the lower end of the limiting grooves 211 is an open structure. The two limiting grooves 211 are respectively slidably connected to the two snap-fit ​​strips 232. In this embodiment, the second rod 210 includes a first sub-rod and a second sub-rod. The second sub-rod is located above the first sub-rod and connected to it, for example, by an integral molding process. The length of the second sub-rod is smaller than the length of the first sub-rod, and the limiting grooves 211 are provided on the first sub-rod. The upper end of the limiting grooves 211 is a closed structure, which ensures that the snap-fit ​​strips 232 are always connected to the limiting grooves 211, so that the snap-fit ​​member 230 maintains its connection with the second rod 210.

[0080] In order to install the snap-fit ​​230 onto the second rod 210, the snap-fit ​​230 includes two symmetrical connecting bodies, and the two connecting bodies are connected together by screws. Specifically, the screw hole is provided on the connecting block 231, and the axis of the screw hole extends left and right.

[0081] The second rod 210 and the connecting rod 110 are hinged together. After the position of the connecting rod 110 relative to the second rod 210 is adjusted, the connecting block 231 moves down along the limiting groove 211 with the locking strip 232 under the push of the user or its own weight, until the lower end of the locking strip 232 is inserted into the locking groove 150 of the connecting rod 110. This prevents the connecting rod clamp 100 from moving relative to the second connecting rod 200, which helps to ensure that the connecting rod clamp 100 can steadily deliver the connecting rod into the patient's body. At this time, the locking member 230 and the locking groove 150 form the second locking structure.

[0082] Furthermore, the first connecting rod 300 includes a first rod body 320 and a movable rod 310. One end of the first rod body 320 is hinged to the front end of the first housing 410 via a first hinge shaft 322, and the other end of the first rod body 320 is hinged to the second rod body 210. Specifically, the hinge shaft on the second rod body 210 passes through the hinge portion 323 of the first rod body 320, and the hinge portion 323 is provided with a corresponding hinge hole. In this embodiment, after the second rod body 210 rotates clockwise around its hinge shaft with the first rod body 320 by a certain angle, the second rod body 210 can be folded; after the second rod body 210 rotates counterclockwise around its hinge shaft with the first rod body 320 by a certain angle, the second rod body 210 can be fully extended.

[0083] The movable rod 310 is located above the first rod body 320 and is slidably connected to the first rod body 320. In this embodiment, the upper surface of the first rod body 320 is provided with a slide rail 321, and the cross-sectional shape of the slide rail 321 is T-shaped. Correspondingly, the lower surface of the movable rod 310 is provided with a connecting groove. The movable rod 310 is connected to the slide rail 321 through the connecting groove, so that the movable rod 310 can only move linearly in the front-back direction relative to the first rod body 320, and cannot move upward relative to the first rod body 320.

[0084] Furthermore, one end of the moving rod 310 is hinged to the second housing 420 via the second hinge shaft 312, and the other end of the moving rod 310 is provided with a limiting block 311. The limiting block 311 and the moving rod 310 can be connected by screws or by an integral molding process. In this embodiment, the front end of the moving rod 310 protrudes forward and downward to form the limiting block 311.

[0085] The limiting block 311 is adapted to and connected to the second rod 210 and the connecting block 231 respectively, so that the snap-fit ​​230 is fixed relative to the second rod 210 and the second rod 210 is fixed relative to the first rod 320. At this time, the moving rod 310 and the limiting block 311 form a first locking structure.

[0086] In this embodiment, the cross-sectional shape of the connecting block 231 is a right trapezoid. After the snap-fit ​​strip 232 snaps into the snap-fit ​​groove 150 of the connecting rod 110 to fix the connecting rod clamp 100 relative to the second connecting rod 200, the connecting block 231 moves down into place; then, the second rod 210 is fully extended, and the moving rod 310 is driven to move from front to back relative to the first rod 320.

[0087] After the moving rod 310 moves to its position, the limiting block 311 located at the front end of the moving rod 310 simultaneously abuts against the second rod 210 and the connecting block 231. Specifically, the rear side of the limiting block 311 is in contact with the contact surface 214 of the second rod 210. The limiting block 311 applies a limiting effect to the second rod 210, preventing the second rod 210 from rotating clockwise relative to the first rod 320, thereby locking the second rod 210.

[0088] Meanwhile, the bottom surface of the limiting block 311 is in contact with the inclined surface 233 of the connecting block 231. The limiting block 311 limits the connecting block 231, preventing the connecting block 231 from moving upward relative to the second rod 210 even when subjected to external force. This strengthens the connection between the locking strip 232 and the connecting rod 110, enhances the working stability of the rod holder, and effectively prevents the locking strip 232 from exiting the locking groove 150 due to the movement of the connecting block 231 during the rod placement operation. This would cause the connecting rod 110 to move relative to the second rod 210, ultimately affecting the rod placement operation.

[0089] In addition, when the connecting block 231 abuts against the limiting block 311, it can also contact the second sub-rod of the second rod 210. That is, the limiting block 311 and the second sub-rod sandwich the connecting block 231, which plays a better limiting role.

[0090] It is understood that both the first housing 410 and the second housing 420 have openings 440 at their front ends for the first rod 320 and the moving rod 310 to extend out. Since the first rod 320 is hinged to the first housing 410 and the moving rod 310 is hinged to the second housing 420, the hinge points of the first rod 320 and the moving rod 310 are different. Moreover, the first rod 320 is slidably connected to the moving rod 310 through a slide rail 321 with a T-shaped cross-section. Therefore, the moving rod 310 can only move linearly along the slide rail 321.

[0091] Therefore, after the first rod 320 and the moving rod 310 slide to form the first link 300, the first link 300 will remain fixed relative to the handle and cannot rotate due to the different hinge points of the first rod 320 and the moving rod 310, as well as the restriction effect of the first rod 320 on the moving rod 310. At this time, the length direction of the first link 300 and the handle are the same.

[0092] Furthermore, the second rod 210 is provided with a sliding block 220. One end of the sliding block 220 is hinged to the connecting rod 110 via a hinge shaft. The second rod 210 is provided with an upward-facing limiting groove 212, which is located above the limiting groove 211. The length direction of the limiting groove 212 is consistent with the length direction of the second rod 210. The sliding block 220 is located in the limiting groove 212 and can slide along the length direction of the second rod 210. In this embodiment, the limiting groove 212 is located on the second sub-rod of the second rod 210, and the cross-sectional shape of the limiting groove 212 is T-shaped. Therefore, the cross-sectional shape of the sliding block 220 is adapted to the limiting groove 212.

[0093] In this embodiment, the upper end of the limiting slot 212 is an open structure, and the lower end of the limiting slot 212 is a closed structure. Therefore, the sliding block 220 with a T-shaped cross-section extends toward one end of the connecting rod 110 to form a connecting part. The cross-sectional shape of the connecting part can be square, and it is connected to the connecting rod 110 through a hinge shaft.

[0094] With this design, the sliding block 220 can slide into the limiting slot 212 from the upper end of the limiting slot 212. After the sliding block 220 slides into place along the limiting slot 212, the rear side of the connecting rod 110 can fit against the abutting surface 213 of the second rod body 210. Then, the locking strip 232 is driven into the locking groove 150 of the connecting rod 110, and the connecting rod 110 can be locked.

[0095] Furthermore, after the rod placement work is completed, the sliding block 220 can be disengaged from the limiting slot 212, and the connecting rod clamp 100 can be removed from the second rod body 210, making it convenient to clean the connecting rod clamp 100 separately; and after the connecting rod clamp 100 is removed, it can be stored together with the second connecting rod 200 and the first connecting rod 300 in the storage cavity of the handle, which can avoid the handle height being too large and allow the handle size to be designed to be smaller.

[0096] In some other embodiments, after the sliding block 220 is placed in the limiting slot 212, the opening structure at the upper end of the limiting slot 212 is closed, so that the connecting rod 110 always remains connected to the second rod body 210, which can reduce the assembly time of the rod holder.

[0097] Furthermore, the rod holder also includes a magnetic block and a locking block 430. The first housing 410 and the second housing 420 are slidably connected. Specifically, the first housing 410 is provided with a connecting groove, and the second housing 420 is provided with a connecting slider. The connecting slider is connected to the connecting groove to achieve a detachable connection between the first housing 410 and the second housing 420. The cross-sectional shape of the connecting groove can be square, semi-circular, or T-shaped.

[0098] Furthermore, the rear end of the second housing 420 is provided with a through hole, which can be a round hole or a square hole. The rear end of the first housing 410 is provided with an upward-facing receiving groove, in which the magnetic block is disposed and tightly connected to the first housing 410.

[0099] When the moving rod 310 moves backward relative to the first rod 320, the second housing 420 can also move linearly relative to the first housing 410. After the moving rod 310 moves into place, the first housing 410 and the second housing 420 are just joined together to form a handle. In order to prevent the second housing 420 from continuing to slide relative to the first housing 410, the locking block 430 passes through the through hole and is inserted into the receiving groove, so that the magnetic block and the locking block 430 make direct contact and generate a magnetic connection. This prevents the locking block 430 from exiting from the through hole without external force, which would cause the connection between the first housing 410 and the second housing 420 to be released.

[0100] After the locking block 430 is connected to the magnetic block, the upper end of the locking block 430 will protrude beyond the through hole, allowing the user to remove the locking block 430. The handle, with its locking block 430 and magnetic block, facilitates manual operation of the locking block 430 without tools, enabling quick and stable connection establishment or disengagement between the first housing 410 and the second housing 420. Compared to using screws for fixation, this unique structure provides users with significantly greater operational convenience.

[0101] In some other embodiments, the positions of the magnetic block and the card block 430 may be interchanged.

[0102] like Figure 9 As shown, when the cross-sectional shape of the connecting groove is T-shaped, the connecting rod 110, the second rod 210, and the first rod 320 can be stored in the first groove of the first housing 410 after folding, while the moving rod 310 can be stored in the second groove of the second housing 420 after folding. This design prevents the connecting rod 110, the second rod 210, and the first rod 320 from protruding from the first groove and hindering the second housing 420 from moving backward relative to the first housing 410. However, with this design, the height of the handle will be relatively large. Therefore, anti-slip textures can be provided on the outer surface of the second housing 420 so that the user can grip the second housing 420 firmly.

[0103] like Figure 10 As shown, when the cross-sectional shape of the connecting groove is square or semi-circular, when the connecting rod 110, the second rod body 210 and the first rod body 320 are folded and stored in the first groove of the first housing 410, the connecting rod 110 protrudes out of the first groove. At this time, the moving rod 310 is folded and stored in the second groove of the second housing 420, and then the second housing 420 is moved from top to bottom closer to the first housing 410, so that the second housing 420 and the first housing 410 are spliced ​​together to form a handle. Finally, the locking block 430 and the magnetic block are connected.

[0104] In the assembly of the rod holder provided in this embodiment of the invention, the connecting block 231 is pulled upward and the sliding block 220 is slid into the opening structure at the upper end of the limiting slot 212. After it moves down into place, the rear side of the connecting rod 110 and the abutment surface 213 of the second rod body 210 are in contact. After the connecting block 231 is released, the connecting block 231 can move down along the limiting slot 211 due to its own weight, driving the locking strip 232 to be locked into the locking slot 150 of the connecting rod 110. Then, the second rod body 210 is fully extended and the moving rod 310 is moved backward relative to the first rod body 320 until the limiting block 311 has a limiting effect on the second rod body 210 and the connecting block 231. At this time, the second housing 420 moves backward relative to the first housing 410 into place, and the locking block 430 can be inserted into the through hole.

[0105] When using screws to lock the device through connecting holes and screw holes, users need to completely unscrew the screws to achieve the folding function of the holder, which is time-consuming and laborious. When loosening the screws to disengage the latch from the screw's clamping force, users often tighten the screws to enhance the holder's stability, applying even greater clamping force to the latch, making loosening the screws difficult during folding and storage. With a design using latches and hooks, users need to exert force to overcome the locking action of the latches and hooks to separate them and achieve the folding function. Furthermore, with accumulated use, the latches or hooks wear down, and the latching connection becomes less tight.

[0106] However, the rod holder provided in this embodiment of the invention adopts a unique design with a moving rod 310, a snap-fit ​​component 230, and a sliding block 220. Users do not need to tighten screws or forcefully pry to overcome the snap-fit ​​effect, which is more convenient and less laborious, reduces the difficulty of operation, improves the efficiency of operation, and greatly enhances the user's satisfaction with the rod holder. It is highly applicable and can be used by surgeons of different genders.

[0107] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A rod holder, characterized in that, include: handle; The first link (300) has one end connected to one end of the handle; The second link (200) has one end connected to the other end of the first link (300); A connecting rod clamp (100) for spinal surgery, the connecting rod clamp (100) comprising: A connecting rod (110) has a cavity (112) with its opening facing forward. The upper part of the connecting rod (110) has a screw hole (111) with its axis extending vertically. The screw hole (111) communicates with the cavity (112). The connecting rod (110) has a slider (113). There are two sliders (113) and they are symmetrically arranged on the two inner walls of the cavity (112). The lower end of the slider (113) forms a connecting rod insertion port (140) with the lower inner wall of the cavity (112). The upper end of the slider (113) forms an insertion port with the upper inner wall of the cavity (112). A clamping rod (120) extends vertically at both ends. The clamping rod (120) is provided with a sliding groove (122). The sliding groove (122) is slidably connected to the slider (113) so that the clamping rod (120) can move vertically relative to the connecting rod (110). The upper end of the clamping rod (120) is provided with a rearward-facing slot (121). The slot (121) penetrates the upper surface of the clamping rod (120). The length of the clamping rod (120) is equal to or less than the length of the insertion port. The locking rod (130) extends vertically at both ends. The locking rod (130) is provided with a threaded part (131). The threaded part (131) is connected to the threaded hole (111). The lower end of the locking rod (130) is engaged with the slot (121). The connecting rod (110) of the connecting rod clamp (100) is connected to the other end of the second connecting rod (200); The handle includes a first housing (410) and a second housing (420), which are detachably connected. The first housing (410) has a first groove, and the second housing has a second groove. The first groove and the second groove together form a storage cavity. The connecting rod (110) is hinged to the second connecting rod (200), the second connecting rod (200) is hinged to the first connecting rod (300), and the first connecting rod (300) is hinged to the first housing (410). A first locking structure is provided between the first connecting rod (300) and the second connecting rod (200) for locking the first connecting rod (300) and the second connecting rod (200). A second locking structure is provided between the second connecting rod (200) and the connecting rod (110) for locking the second connecting rod (200) and the connecting rod (110). The connecting rod (110) has a snap-fit ​​groove (150) on both its left and right sides, and the snap-fit ​​groove (150) penetrates the rear side of the connecting rod (110); the second connecting rod (200) includes a second rod body (210) and a snap-fit ​​member (230), the second rod body (210) is hinged to the connecting rod (110), and the snap-fit ​​member (230) includes a snap-fit ​​strip (232) and a connecting block (231), the snap-fit ​​strip (232) has two parallel strips. The two locking strips (232) are configured such that one end is connected to the connecting block (231), and the other end of the two locking strips (232) can be inserted into the two locking slots (150) respectively. The left and right sides of the second rod body (210) are provided with limiting grooves (211), and the two limiting grooves (211) are slidably connected to the two locking strips (232) respectively. The locking member (230) and the locking slot (150) form the second locking structure. The first connecting rod (300) includes a first rod body (320) and a movable rod (310). One end of the first rod body (320) is hinged to the first housing (410), and the other end of the first rod body (320) is hinged to the second rod body (210). The movable rod (310) is located above the first rod body (320) and is slidably connected to the first rod body (320). One end of the movable rod (310) is hinged to the second housing (420), and the other end of the movable rod (310) is provided with a limiting block (311). The limiting block (311) is adapted to and connected to the second rod body (210) and the connecting block (231) respectively, so that the snap-fit ​​member (230) is fixed relative to the second rod body (210) and the second rod body (210) is fixed relative to the first rod body (320). The movable rod (310) and the limiting block (311) form the first locking structure. The second rod (210) is provided with a sliding block (220), one end of which is hinged to the connecting rod (110). The second rod (210) is provided with an upward-facing limiting groove (212), which is located above the limiting groove (211). The sliding block (220) is located in the limiting groove (212) and can slide along the length direction of the second rod (210). The upper end of the limiting slot (212) is an open structure.

2. The rod holder according to claim 1, characterized in that, It also includes a magnetic block and a card block (430). The first housing (410) and the second housing (420) are slidably connected. The rear end of the second housing (420) is provided with a through hole. The rear end of the first housing (410) is provided with an upward-facing receiving groove. One of the magnetic block and the card block (430) is disposed in the receiving groove. The other of the magnetic block and the card block (430) passes through the through hole and is inserted into the receiving groove. The magnetic block and the card block (430) are magnetically connected.

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