Holder

Abstract

The utility model provides a holding and taking device, and relates to the technical field of medical instruments. The holding device comprises an arm frame, a knob, a pipe frame and a clamping arm, the arm frame is provided with a sleeve sleeved with the clamping arm; the pipe frame is sleeved on the arm frame and is connected with the clamping arm; the clamping arms are provided with clamping heads extending to the outside of the sleeve in the direction away from the pipe frame, and each clamping head is provided with an outer conical surface with the radial size gradually increased from the end close to the pipe frame to the end away from the pipe frame and a clamping opening away from the pipe frame; and the knob is rotationally connected to the arm frame, is in threaded fit with the pipe frame, and is used for pulling the pipe frame and driving the chuck to contract towards the interior of the sleeve. The outer conical surface can be extruded by the sleeve, then the clamping opening is driven to contract, the clamping action is achieved, and the device is particularly suitable for clamping and implanting a fusion cage in a lumbar vertebra lateral path operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is related to a kind of holding and taking device. BACKGROUND

[0002] In part lumbar lateral approach surgery, L5-S1 (waist five to sacrum one) segment is implanted with spinal fusion cage, so it is necessary to specially design and match the clamping device with the fusion cage. In addition, since the approach of the fusion cage is often blocked by the bilateral pelvic structure, it is difficult to accurately place it into the intervertebral space along the straight path. Under normal circumstances, the patient needs to take a specific position to ensure that the fusion cage can bypass the pelvis and be implanted smoothly, but it is difficult for the patient to maintain this position until the operation is completed, which increases the complexity of the operation and prolongs the operation time, thereby increasing the safety risk of the operation. SUMMARY

[0003] The utility model aims at providing a kind of holding and taking device to realize clamping and implantation operation.

[0004] In the first aspect, the utility model provides a holding and taking device, comprising: arm support, knob, pipe support and clamping arm;

[0005] The arm support is provided with a sleeve pipe for sleeving the clamping arm;

[0006] The pipe support is sleeved with the arm support, and the pipe support is connected with the clamping arm;

[0007] The clamping arm is provided with a chuck extending to the outside of the sleeve pipe away from the pipe support, the chuck has an outer taper surface with increasing radial dimension from the end close to the pipe support to the end away from the pipe support, and a clamping opening away from the opening of the pipe support;

[0008] The knob is rotationally connected to the arm support, and the knob is threadedly matched with the pipe support, and the knob is used to pull the pipe support and drive the chuck to retract into the sleeve pipe.

[0009] In combination with the first aspect, the utility model provides a first possible implementation manner of the first aspect, wherein the arm support comprises: curved arm, groove ring and handle;

[0010] The curved arm has a straight section and a curved section, the sleeve pipe is connected with the curved section, and the straight section is parallel to the axis of the sleeve pipe;

[0011] The groove ring is connected to the straight section, and the knob is rotationally connected to the groove ring;

[0012] The handle is connected to the straight section.

[0013] With the first possible implementation manner of the first aspect, the utility model provides a second possible implementation manner of the first aspect, wherein one end of the straight section away from the curved section is provided with a tail cap.

[0014] With the second possible implementation manner of the first aspect, the utility model provides a third possible implementation manner of the first aspect, wherein the handle and the tail cap are both connected to the straight section through a first pin.

[0015] With the third possible implementation manner of the first aspect, the utility model provides a fourth possible implementation manner of the first aspect, wherein the handle comprises a core rod and a handle connected to the core rod.

[0016] The tail cap is provided with a first pipe part sleeving the straight section, and the core rod is connected with a second pipe part sleeving the first pipe part.

[0017] The first pin is inserted along the radial direction of the second pipe part to the second pipe part, the first pipe part and the straight section.

[0018] With the first possible implementation manner of the first aspect, the utility model provides a fifth possible implementation manner of the first aspect, wherein the groove ring is connected to the straight section through a second pin, and the outer circumferential surface of the groove ring is recessed to form an annular groove extending in the circumferential direction.

[0019] The knob is provided with a positioning part inserted into the annular groove.

[0020] With the first aspect, the utility model provides a sixth possible implementation manner of the first aspect, wherein the chuck is provided with a tooth part protruding inwardly of the clamping opening and adapted to the fusion cage.

[0021] With the first aspect, the utility model provides a seventh possible implementation manner of the first aspect, wherein the clamping arm is provided with a notch groove extending axially along the sleeve tube towards the direction close to the pipe support from the starting point of the clamping opening.

[0022] With the seventh possible implementation manner of the first aspect, the utility model provides an eighth possible implementation manner of the first aspect, wherein the clamping arm is provided with a through groove, and one end of the notch groove away from the clamping opening is communicated with the through groove.

[0023] With the first aspect, the utility model provides a ninth possible implementation manner of the first aspect, wherein the side wall of the sleeve tube is provided with a slot.

[0024] The present invention provides the following advantages: The arm is fitted with a sleeve for attaching clamping arms. The sleeve is fitted with the arm and connected to the clamping arms. The clamping arms have clamps extending away from the sleeve to the outside of the sleeve. The clamps have an outer conical surface with radially increasing dimensions from the end near the sleeve to the end away from the sleeve, and a clamping opening away from the sleeve. A knob is rotatably connected to the arm and threadedly engaged with the sleeve. By turning the knob, the sleeve can be pulled, causing the clamps to retract into the sleeve. This allows the outer conical surface to be squeezed by the sleeve, thereby causing the clamping opening to retract and achieving the clamping action. This is particularly suitable for clamping and implanting fusion devices during lumbar lateral approach surgery.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A cross-sectional view of the holder and fusion device provided in an embodiment of this utility model;

[0028] Figure 2 A schematic diagram of the holder and fusion device provided in the embodiments of this utility model;

[0029] Figure 3 A cross-sectional view of the arm of the gripper provided in an embodiment of this utility model;

[0030] Figure 4 A schematic diagram of the arm of the gripper provided in an embodiment of this utility model;

[0031] Figure 5 A schematic diagram of the gripper arm provided in an embodiment of this utility model;

[0032] Figure 6 A schematic diagram of the fusion device provided in an embodiment of this utility model.

[0033] Icon: 100 - arm bracket; 101 - first pin; 102 - second pin; 110 - sleeve; 111 - notch; 120 - curved arm; 121 - straight section; 122 - curved section; 130 - slot ring; 131 - annular slot; 140 - handle; 141 - core rod; 142 - grip; 143 - second tube part; 150 - tail cap; 151 - first tube part; 200 - knob; 201 - positioning part; 300 - tube bracket; 400 - clamping arm; 410 - chuck; 411 - outer taper surface; 412 - clamping opening; 413 - tooth part; 414 - notched slot; 415 - through slot; 500 - fusion cage; 501 - matching slot; 502 - clamping slot. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only used to describe the name difference, and cannot be understood as indicating or implying relative importance. Physical quantities in the formula, such as no separate marking, should be understood as the basic quantity of the International System of Units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration, etc. Mathematical operation.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the holder provided by the utility model embodiment comprises: an arm support 100, a knob 200, a pipe support 300 and a clamping arm 400; the arm support 100 is provided with a sleeve pipe 110 sleeving the clamping arm 400; the pipe support 300 is sleeved on the arm support 100, and the pipe support 300 is connected with the clamping arm 400; the clamping arm 400 is provided with a chuck 410 extending to the outside of the sleeve pipe 110 in a direction away from the pipe support 300, the chuck 410 has an outer taper surface 411 with a radial dimension increasing from one end close to the pipe support 300 to one end away from the pipe support 300, and a clamping opening 412 opening away from the pipe support 300; the knob 200 is rotationally connected to the arm support 100, and the knob 200 is threadedly matched with the pipe support 300, and the knob 200 is used for pulling the pipe support 300 and driving the chuck 410 to retract into the sleeve pipe 110.

[0038] The clamping opening 412 can be adapted to the fusion cage 500, and is suitable for clamping and implanting operation of the fusion cage 500 in the lumbar lateral surgery. The pipe support 300 can be pulled by rotating the knob 200, the clamping arm 400 can be pulled by the pipe support 300, the chuck 410 can be gradually retracted into the sleeve pipe 110, the sleeve pipe 110 can extrude the outer taper surface 411, and the clamping opening 412 is driven to retract to realize stable clamping of the fusion cage 500.

[0039] In the utility model embodiment, the arm support 100 comprises: a curved arm 120, a groove ring 130 and a handle 140; the curved arm 120 has a straight section 121 and a curved section 122, the sleeve pipe 110 is connected with the curved section 122, and the straight section 121 is parallel to the axis of the sleeve pipe 110; the groove ring 130 is connected to the straight section 121, and the knob 200 is rotationally connected to the groove ring 130; and the handle 140 is connected to the straight section 121.

[0040] The pipe support 300 is sleeved on the straight section 121, the pipe support 300 can slide along the straight section 121 by rotating the knob 200, the sleeve pipe 110 is supported by the curved section 122, so that the clamping arm 400 passing through the sleeve pipe 110 deviates from the axis of the straight section 121, thereby avoiding the pelvis during the implantation, reducing the operation difficulty of the lumbar lateral surgery, being beneficial to shortening the operation time, and further improving the operation safety.

[0041] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the tail cap 150 is installed at one end of the straight section 121 away from the curved section 122, and the fusion cage 500 can be impacted and pushed by knocking the tail cap 150 during implantation.

[0042] As shown in Figure 3 , the handle 140 and the tail cap 150 are both connected to the straight section 121 through the first pin 101, so that the assembly is convenient and the structure is compact.

[0043] Further, the handle 140 comprises a core rod 141 and a grip 142 connected to the core rod 141; the tail cap 150 has a first tube portion 151 sleeving the straight section 121, and the core rod 141 is connected with a second tube portion 143 sleeving the first tube portion 151; the first pin 101 is inserted along the radial direction of the second tube portion 143 to the second tube portion 143, the first tube portion 151 and the straight section 121.

[0044] Wherein, the grip 142 and the core rod 141 can be connected through thread cooperation, or can be fixed through bolts or pins. The first tube portion 151 sleeves the straight section 121, and then the second tube portion 143 sleeves the first tube portion 151, and the first pin 101 is used to pass through the second tube portion 143, the first tube portion 151 and the straight section 121, so as to fix the tail cap 150, the second tube portion 143 and the straight section 121.

[0045] As shown in Figure 1 , Figure 3 and Figure 4 , the groove ring 130 is connected to the straight section 121 through the second pin 102, and the outer circumferential surface of the groove ring 130 is recessed to form an annular groove 131 extending in the circumferential direction; the knob 200 has a positioning portion 201 inserted into the annular groove 131, so as to ensure that the knob 200 can rotate smoothly along the circumferential direction of the annular groove 131, and the axial positioning of the knob 200 relative to the groove ring 130 can be realized.

[0046] As shown in Figure 1 , Figure 5 and Figure 6 , the collet 410 is provided with a tooth portion 413 protruding inwardly of the clamping opening 412 and adapted to the fusion cage 500.

[0047] When the sleeve 110 extrudes the outer conical surface 411, the clamping opening 412 is contracted and the tooth portion 413 is clamped in the clamping groove 502 of the fusion cage 500, so as to ensure that the fusion cage 500 is relatively stable with the collet 410.

[0048] In addition, the fusion cage 500 is provided with a matching groove 501, the clamping groove 502 is located at the bottom of the matching groove 501, the collet 410 can slide along the matching groove 501 until the tooth portion 413 is aligned with the clamping groove 502, and the tooth portion 413 can be clamped and matched in the clamping groove 502 when the clamping opening 412 is contracted. When the knob 200 is unscrewed in the opposite direction, the knob 200 pushes the pipe holder 300, the pipe holder 300 can drive the collet 410 to extend out of the sleeve 110, the extrusion of the sleeve 110 to the outer conical surface 411 is reduced, the collet 410 gradually rebounds to open the clamping opening 412, so as to realize the release of the fusion cage 500.

[0049] As shown in Figure 1 and Figure 5As shown in the figure, the clamping arm 400 is provided with a notch groove 414 extending axially along the sleeve 110 from the clamping opening 412 to the direction close to the pipe rack 300, and the deformation space is provided by the notch groove 414 so that the clamping opening 412 has a larger contraction range, thereby realizing the stable clamping of the fusion device 500.

[0050] Further, the clamping arm 400 is provided with a through groove 415, and the end of the notch groove 414 away from the clamping opening 412 is communicated with the through groove 415, wherein the opening shape of the through groove 415 is approximately circular or elliptical, which can reduce the risk of breaking of the clamping arm 400 when the notch groove 414 and the clamping opening 412 are contracted.

[0051] As shown in the figure, Figure 2 , Figure 3 and Figure 4 , the side wall of the sleeve 110 is provided with a slot 111, and the clamping arm 400 can be accessed from the slot 111, thereby facilitating the observation of the activity state of the clamping arm 400.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pick-up device, characterized in that The utility model relates to a medical device for fixing and protecting the fusion cage (500) in the intervertebral space, which comprises an arm support (100), a knob (200), a tube support (300) and a clamping arm (400). The arm support (100) is provided with a sleeve (110) sleeving the clamping arm (400). The tube support (300) sleeves the arm support (100), and the tube support (300) is connected with the clamping arm (400). The clamping arm (400) is provided with a chuck (410) extending to the outside of the sleeve (110) in the direction away from the tube support (300), the chuck (410) has an outer taper surface (411) with the radial dimension increasing from the end close to the tube support (300) to the end away from the tube support (300), and a clamping opening (412) opening in the direction away from the tube support (300). The knob (200) is rotationally connected with the arm support (100), and the knob (200) is threadedly matched with the tube support (300), and the knob (200) is used for pulling the tube support (300) and driving the chuck (410) to shrink into the sleeve (110). The arm support (100) comprises a curved arm (120), a groove ring (130) and a handle (140).

2. The gripper of claim 1, wherein The curved arm (120) has a straight section (121) and a curved section (122), the sleeve (110) is connected with the curved section (122), and the straight section (121) is parallel with the axis of the sleeve (110). The groove ring (130) is connected with the straight section (121), and the knob (200) is rotationally connected with the groove ring (130). The handle (140) is connected with the straight section (121). The tail cap (150) is installed at the end of the straight section (121) away from the curved section (122).

3. The gripper of claim 2, wherein, The handle (140) and the tail cap (150) are both connected with the straight section (121) through a first pin (101).

4. The gripper of claim 3, wherein The handle (140) comprises a core rod (141) and a grip handle (142) connected with the core rod (141).

5. The gripper of claim 4, wherein, The tail cap (150) has a first tube part (151) sleeving the straight section (121), and the core rod (141) is connected with a second tube part (143) sleeving the first tube part (151). The first pin (101) is inserted along the radial direction of the second tube part (143) in the second tube part (143), the first tube part (151) and the straight section (121). The groove ring (130) is connected with the straight section (121) through a second pin (102), and the outer circumferential surface of the groove ring (130) is recessed to form an annular groove (131) extending in the circumferential direction.

6. The gripper of claim 2, wherein The knob (200) has a positioning part (201) inserted in the annular groove (131). The chuck (410) is provided with a tooth part (413) protruding to the inside of the clamping opening (412) and adapted to the fusion cage (500).

7. The gripper of claim 1, wherein The clamping arm (400) is provided with a notch groove (414) extending in the axial direction of the sleeve (110) and approaching the tube support (300) from the clamping opening (412).

8. The gripper according to claim 1 or 7, characterized in that ​ 9. The gripper of claim 8, wherein, The clamping arm (400) is provided with a through groove (415), and the gap groove (414) is communicated with the through groove (415) away from one end of the clamping opening (412).

10. The gripper of claim 1, wherein, The side wall of the sleeve (110) is provided with a notch (111).

Images