Stent pressing and holding device and conveying and loading device
By designing a hand-crank driven gear transmission and a multi-layer gripping disc bracket gripper, the problems of unstable clamping and low loading efficiency in existing grippers are solved, realizing a high-efficiency, stable, and low-cost loading process for the bracket.
Patent Information
- Application Number
- CN202423142941.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing grippers have problems such as limited clamping surface length, loose structure, inability to withstand large gripping force, unstable movement, lack of pushing device, and complicated cleaning and maintenance during stent implantation, resulting in low loading efficiency and high cost.
A bracket gripper was designed, comprising a hand crank, a rotating shaft, gears, a rotating disk, and multiple gripping disks. It achieves stable gripping of the bracket through gear transmission and is equipped with a locking mechanism and a lubrication device. Combined with a conveying and loading device, it ensures stable loading of the bracket.
It achieves efficient gripping and stable loading of the bracket, reduces loading time, lowers costs, and improves loading efficiency and structural simplicity.
Smart Images
Figure CN223845802U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of medical devices, concretely relates to a support pressure holder and conveying loading device. BACKGROUND
[0002] The support is one of the most common implants in the interventional operation, and its implant principle is to press and hold the support to the appropriate radial size and load it in the catheter or capsule in vitro, and then remove the support from the catheter or capsule after entering the expected position in the patient's body through the catheter, so that the support is implanted into the corresponding position through the self-expanding or balloon opening of the support to realize the treatment effect. During the in-vitro pressing and loading process, the pressure holder is usually used for pressing and holding to reduce the support to the appropriate radial size.
[0003] The pressure holder is a device for compressing implanted or interventional instruments such as supports, valves and the like in the field of medical devices, so that these instruments can be transported in the body through a smaller radial size. The existing pressure holder has the problems of limited length of the pressure holding surface in the axial direction of the support, loose overall structure, inability to withstand a larger pressure holding force, poor movement stability of the moving rod and clamping piece, and the like, and also has the problems of lack of necessary auxiliary device mechanism after pressure holding, lack of function of pushing device to the lumen, complex maintenance and cleaning procedures, higher cost and the like. SUMMARY
[0004] The utility model provides a support pressure holder and conveying loading device, aims at overcoming the above-mentioned deficiencies in the prior art.
[0005] The utility model discloses a technical scheme that solves the above technical problem as follows: a support pressing device, which comprises a mounting shell, a hand lever and a rotating pressing mechanism arranged in the inner cavity of the mounting shell, the rotating pressing mechanism comprises a rotating shaft, a first gear, a second gear, a rotating disc, a driving disc and a plurality of pressing discs arranged coaxially and in layers, the left end of the rotating shaft extends out of the mounting shell and is fixedly connected with the hand lever, the right end of the rotating shaft extends into the inner cavity and is fixedly connected coaxially with the first gear, the first gear is engaged with the second gear, the second gear is fixedly sleeved on the outer periphery of the rotating disc, the left side of the rotating disc is coaxially provided with the driving disc, the driving disc is fixedly connected with the mounting shell, the driving disc is uniformly and spacedly provided with a plurality of radially extending straight sliding grooves in the circumferential direction, the rotating disc is provided with arc-shaped grooves corresponding to the straight sliding grooves one by one, each pressing disc is composed of a plurality of pressing force blocks, the outer end of the pressing force block is hinged to the left side edge of the driving disc, the middle part of the pressing force block sequentially passes through the corresponding straight sliding groove and arc-shaped groove through a push rod, when the rotating disc rotates, the inner end of each pressing force block can be made to approach each other to clamp or move away from each other to release, the mounting shell is provided with a central hole for placing the support to be pressed into the center of the pressing disc, and the rotating pressing mechanism further comprises a lock releasing mechanism for locking and stopping the rotating shaft.
[0006] Further, the lock releasing mechanism comprises a ratchet wheel, a limiting block, a limiting rod, a sliding block and a lever, the left side wall of the mounting shell is fixedly provided with a sleeve in communication with the inner cavity and for accommodating the rotating shaft, the inner wall of the sleeve is provided with a guide sliding groove in sliding cooperation with the sliding block, one end of the lever is fixedly connected with one end of the limiting rod perpendicularly and is fixedly provided with the sliding block at the connection position, the other end of the limiting rod is fixedly connected with the limiting block, an L-shaped limiting groove is formed in the side wall of the sleeve, the other end of the lever extends out of the limiting groove, the ratchet wheel is fixedly connected with the hand lever, and the limiting block can be inserted into the tooth groove of the ratchet wheel by pushing the lever to lock and stop the hand lever and the rotating shaft.
[0007] Further, the lock releasing mechanism further comprises a spring, one end of the spring is sleeved on the end of the limiting rod away from the limiting block, and the other end of the spring is abutted against the annular step surface on the rotating shaft, the end of the rotating shaft away from the hand lever is fixedly connected with the mounting shell through the first sleeve externally sleeved on the rotating shaft, the annular step surface is the end surface of the cylindrical body coaxially fixedly connected with the first gear.
[0008] Further, the mounting shell comprises a first shell body on the left side and a second shell body on the right side, the inner side of the second shell body is provided with an inner convex annular ring coaxial with the central hole, the rotating disc is rotatably connected on the inner convex annular ring through a central circular hole, and a second sleeve for lubrication is clamped between the central circular hole and the inner convex annular ring.
[0009] Further, the second sleeve is a ball bearing or a PTFE bushing.
[0010] Further, the first housing and the second housing are connected by bolts.
[0011] Further, the material of the pressure-gripping force block is PTFE.
[0012] Further, the outer end of the pressure-gripping force block is hinged to the outer side of the driving disc through an outer connecting column, and the inner ends of the pressure-gripping force blocks corresponding to each other on different layers are connected to each other through inner connecting columns.
[0013] The utility model also provides a conveying loading device, it includes horizontal setting bottom plate, conveying device clamping drive mechanism and above-mentioned support pressure gripper, conveying device clamping drive mechanism and support pressure gripper all are fixedly installed on the bottom plate top, conveying device clamping drive mechanism includes the pedestal of fixed connection with bottom plate, the upper surface of pedestal is opened with translation sliding slot along left and right directions, translation sliding block is connected with translation sliding slot in sliding, the pedestal is rotatably connected with screw rod that has screw transmission with translation sliding block, one end of screw rod projects the pedestal with hand wheel fixed connection, the lower clamp block is fixed on the translation sliding block upper part, be equipped with the upper clamp block on the lower clamp block, be equipped with the clamping groove for clamping the conveying device pipe body between the upper clamp block and the lower clamp block, the central axis of the conveying device pipe body clamped on the clamping groove is aligned with the central hole central axis of the right end of support pressure gripper.
[0014] Further, one side of the upper clamp block is hinged to one side of the lower clamp block, and the other side of the upper clamp block is detachably connected to the other side of the lower clamp block through a lock catch.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] The support pressure gripper provided by the utility model has a hand lever, a rotating shaft, a first gear, a second gear, a rotating disc, a driving disc and a plurality of pressure-gripping discs arranged coaxially and in layers. The rotating shaft is rotated by the hand lever, the second gear and the rotating disc are rotated by the first gear, and then the plurality of petal-shaped pressure-gripping force blocks constituting the pressure-gripping discs are rotated around the hinge between the outer end and the driving disc by the push rods inserted into the linear sliding groove of the driving disc and the arc-shaped groove of the rotating disc in sequence. When rotating, the inner ends of the pressure-gripping force blocks can approach each other and the support to be gripped is gradually compressed in the radial direction until the appropriate size. The number of the pressure-gripping discs arranged in layers can be selected according to the size of the support to be gripped, so that the support to be gripped can be gripped better. The transmission is realized by the first gear and the second gear, the fixed cavity of the support pressure gripper can be relatively thinner, and the overall size of the support pressure gripper can be relatively smaller.
[0017] Further, the conveying and loading device can well solve the problems of bracket pressing and loading difficulty, the coaxiality of the through hole of the conveyor (clamped between the upper and lower clamping blocks) and the central hole of the pressing device ensures the stability of the loading position, and the setting of the multiple pressing force blocks can effectively reduce or avoid the damage to the surface of the bracket during loading, greatly saving the loading time and ensuring the loading efficiency, and the simple structure and convenient work are easy to assemble, compared with the pressing device on the market, the cost can be saved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The shaft view of the bracket pressing device is shown in the figure.
[0019] Figure 2 The left view of the bracket pressing device is shown in the figure. Figure 1
[0020] Figure 3 The sectional view of the bracket pressing device along the arrow A-A is shown in the figure. Figure 2
[0021] Figure 4 The enlarged view of the structure in the dashed-dotted line is shown in the figure. Figure 3
[0022] Figure 5 The exploded view of the bracket pressing device is shown in the figure. Figure 1
[0023] Figure 6 The enlarged view of the structure in the dashed-dotted line circle is shown in the figure. Figure 5
[0024] Figure 7 The shaft view of the rotary disc, the driving disc and the two stacked pressing discs after assembly is shown in the figure. Figure 5
[0025] Figure 8 The exploded view of the assembly is shown in the figure. Figure 7
[0026] The front view of the conveying and loading device is shown in the figure. Figure 9
[0027] The right view of the conveying and loading device is shown in the figure. Figure 10 Figure 9 The top view of the conveying and loading device is shown in the figure.
[0028] Figure 11 Figure 9 The shaft view of the conveying and loading device is shown in the figure.
[0029] Figure 12 The shaft view of the conveying and loading device is shown in the figure. Figure 9
[0030] Figure 13 for Figure 11 the left view of the pedestal and the structure thereon in the conveying and loading device shown in
[0031] Figure 14 for Figure 11 the left view of the pedestal and the structure thereon in the conveying and loading device shown in
[0032] Figure 15 for Figure 9 the schematic view of the upper and lower clamping blocks on the pedestal in the support device shown in
[0033] In the drawings, the components represented by the respective reference numerals are listed as follows:
[0034] 1, mounting shell; 2, hand lever; 3, rotating shaft; 4, first gear; 5, second gear; 6, rotating disc; 7, driving disc; 8, pressing disc; 9, straight sliding slot; 10, arc-shaped slot; 11, pressing force block; 12, push rod; 13, center hole; 14, ratchet; 15, limiting block; 16, sliding block; 17, lever; 18, sleeve; 19, limiting slot; 20, spring; 21, first thimble; 22, first housing; 23, second housing; 24, inner convex circular ring; 25, second thimble; 26, outer connecting column; 27, inner connecting column; 28, bottom plate; 29, pedestal; 30, translation sliding slot; 31, translation sliding block; 32, lead screw; 33, hand wheel; 34, upper clamping block; 35, lower clamping block; 36, clamping slot; 37, hinge; 38, lock catch. DETAILED DESCRIPTION
[0035] The principles and features of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.
[0036] In the description of the present application, if the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "top", "bottom", "inner", "outer" are used, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.
[0037] As Figures 1 to 8As shown, the utility model provides a kind of support pressure holder, it includes installation shell 1, hand lever 2 and be equipped in the rotating pressure holding mechanism in the inner cavity of installation shell 1, the rotating pressure holding mechanism includes pivot 3, first gear 4, second gear 5, rotary disc 6, driving disc 7 and the coaxial laminated multiple pressure holding disc 8 of being arranged, pivot 3 left end protrudes outside installation shell 1 and is fixedly connected with hand lever 2, right end is inserted into the inner cavity and is fixedly connected with first gear 4 coaxially, first gear 4 is engaged with second gear 5, second gear 5 is fixedly covered in the outer periphery of rotary disc 6, the left side of rotary disc 6 is coaxially equipped with driving disc 7, driving disc 7 is fixedly connected with installation shell 1, driving disc 7 is evenly spaced in circumferential direction and is equipped with several radial extending straight line sliding groove 9, rotary disc 6 is equipped with the arc-shaped groove 10 corresponding with straight line sliding groove 9 one by one, each pressure holding force block 11 of the multiple petal of pressure holding is made up, the outer end of pressure holding force block 11 is hinged at the left side face edge of driving disc 7, the middle part of pressure holding force block 11 is sequentially passed through corresponding straight line sliding groove 9 and arc-shaped groove 10 by push rod 12, when rotary disc 6 rotates, the inner end of each pressure holding force block 11 can be mutually close and be clamped or mutually far away and be loosened, the center hole 13 for being placed in the center of pressure holding disc 8 of the support to be pressed is opened in installation shell 1, the rotating pressure holding mechanism further includes the lock release mechanism for locking the rotation of pivot 3.
[0038] In an embodiment of the utility model, the lock release mechanism includes a ratchet wheel 14, a limiting block 15, a limiting rod, a sliding block 16, and a lever 17. The left side wall of the installation shell 1 is fixedly provided with a sleeve 18 that is in communication with the inner cavity and is used for accommodating the pivot 3. A guide sliding groove is formed on the inner wall of the sleeve 18 and is used for slidingly matching the sliding block 16. One end of the lever 17 is fixedly connected with one end of the limiting rod perpendicularly, and the sliding block 16 is fixedly connected at the connection position. The other end of the limiting rod is fixedly connected with the limiting block 15. An L-shaped limiting groove 19 is formed on the side wall of the sleeve 18. The other end of the lever 17 protrudes outward from the limiting groove 19. The ratchet wheel 14 is fixedly connected with the hand lever 2. When the lever 17 is pushed, the limiting block 15 is inserted into the tooth groove of the ratchet wheel 14, so that the hand lever 2 and the pivot 3 are locked and stopped from rotating.
[0039] It should be noted that the support presser in the embodiment is used to place the support into the press hole (central hole), shake the hand lever to rotate the first gear to drive the second gear, thereby rotating the rotating disc to drive the driving disc to rotate the force block synchronously; when the aperture is adjusted to be appropriate, the hand lever can be fixed by the lock release mechanism, the limiting rod one end limiting block is locked with the ratchet wheel by moving the lever, when not fixed, the limiting block is separated from the ratchet wheel by moving the lever to move backward, and then the hand lever is placed into the limiting slot and the bending area downward.
[0040] In one embodiment of the utility model, the lock release mechanism further includes a spring 20, one end of the spring 20 is sleeved on the end of the limiting rod away from the limiting block 15, the other end is abutted against the circular ring step surface on the rotating shaft 3, the end of the rotating shaft 3 away from the hand lever 2 is fixedly connected with the installation shell 1 through the first sleeve 21 externally sleeved on the rotating shaft 3, and the circular ring step surface is the end face of the cylindrical body.
[0041] It should be noted that the spring can provide the limiting rod with a compression force to maintain the current state, which can be the state that the limiting block is clamped with the tooth groove of the ratchet wheel or the state that the lever is placed into the bending area of the limiting slot downward.
[0042] In one embodiment of the utility model, the installation shell 1 includes a first shell 22 on the left side and a second shell 23 on the right side, the inner side of the second shell 23 is provided with an inner convex circular ring 24 coaxial with the central hole 13, the rotating disc 6 is rotatably connected on the inner convex circular ring 24 through a central circular hole, and a second sleeve 25 for lubrication is clamped between the central circular hole and the inner convex circular ring 24.
[0043] In one embodiment of the utility model, the second sleeve 25 is a ball bearing or a PTFE shaft sleeve.
[0044] It should be noted that the second sleeve can effectively ensure that the rotating disc can rotate around the central axis in the installation shell without displacement and has smaller frictional resistance when rotating.
[0045] In one embodiment of the utility model, the first shell 22 and the second shell 23 are connected through bolts.
[0046] In one embodiment of the utility model, the material of the press force block 11 is PTFE.
[0047] In an embodiment of the utility model, the outer end of the pressure-gripping force block 11 is hinged to the outer side of the driving disc 7 through an outer connecting column 26, and the inner ends of the pressure-gripping force blocks corresponding to each other on different layers are connected to each other through inner connecting columns 27.
[0048] It should be noted that, as shown in Figure 7 and 8 Each pressure-gripping disc is composed of six pressure-gripping force blocks, and the pressure-gripping discs are arranged in a stacked and close manner in the axial direction of the rotating shaft. Generally, at least two pressure-gripping discs are provided. When the rotating disc rotates, the rotating directions of the pressure-gripping force blocks on the adjacent two pressure-gripping discs are opposite.
[0049] As shown in Figures 9 to 15 The utility model also provides a conveying and loading device which comprises a horizontally arranged bottom plate 28, a conveyor clamping transmission mechanism and the above-mentioned support pressure-gripper. The conveyor clamping transmission mechanism and the support pressure-gripper are both fixedly installed above the bottom plate 28. The conveyor clamping transmission mechanism comprises a pedestal 29 which is fixedly connected with the bottom plate 28. A translation sliding groove 30 is formed in the upper surface of the pedestal 29 along the left-right direction. A translation sliding block 31 is slidably connected in the translation sliding groove 30. A lead screw 32 is rotationally connected to the upper surface of the pedestal 29 and is screw transmissionally connected with the translation sliding block 31. One end of the lead screw 32 extends out of the pedestal 29 and is fixedly connected with a hand wheel 33. A lower clamping block 35 is fixedly arranged on the upper portion of the translation sliding block 31. An upper clamping block 34 is arranged on the lower clamping block 35. A clamping groove 36 for clamping the pipe body of the conveyor is arranged between the upper clamping block 34 and the lower clamping block 35. The central axis of the pipe body of the conveyor clamped on the clamping groove 36 is aligned with the central axis of the central hole 13 at the right end of the support pressure-gripper.
[0050] It should be noted that, when the support is loaded into the inner cavity of the conveyor for a small section, the hand wheel of the support pressure-gripper is loosened or reversely slightly rotated, the pressure-gripping opening is opened, then the hand wheel of the conveyor clamping transmission mechanism is rotated, the conveyor is retreated, after reaching a proper distance, the hand wheel of the support pressure-gripper is shaken, the support is compressed, then the translation sliding block and the structure thereon are stably advanced to continue the loading by rotating the hand wheel. Through the reciprocating process, the support can be completely loaded into the conveyor.
[0051] In an embodiment of the utility model, one side of the upper clamping block 34 is hinged to one side of the lower clamping block 35 through a hinge 37, and the other side of the upper clamping block 34 is detachably connected to the other side of the lower clamping block 35 through a lock catch 38.
[0052] It should be noted that the material of the pressure-gripping force block is preferably polytetrafluoroethylene. The material is relatively soft, and the surface energy is low, which can effectively prevent the support from being damaged during the pressure-gripping process.
[0053] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A stent crimping device, characterized by, The utility model relates to a rotating press mechanism, which comprises a mounting shell (1), a hand lever (2) and a rotating press mechanism installed in the inner cavity of the mounting shell (1). The rotating press mechanism comprises a rotating shaft (3), a first gear (4), a second gear (5), a rotating disc (6), a driving disc (7) and a plurality of press discs (8) arranged coaxially and in layers. The left end of the rotating shaft (3) extends out of the mounting shell (1) and is fixedly connected with the hand lever (2). The right end of the rotating shaft (3) extends into the inner cavity and is fixedly connected with the first gear (4) coaxially. The first gear (4) is engaged with the second gear (5). The second gear (5) is fixedly sleeved on the outer periphery of the rotating disc (6). The left side of the rotating disc (6) is coaxially provided with the driving disc (7). The driving disc (7) is fixedly connected with the mounting shell (1). The driving disc (7) is uniformly and circumferentially provided with a plurality of radially extending straight sliding grooves (9). The rotating disc (6) is provided with arc-shaped grooves (10) corresponding to the straight sliding grooves (9). Each press disc (8) is composed of a plurality of press force blocks (11). The outer end of the press force block (11) is hingedly connected with the left side edge of the driving disc (7). The middle part of the press force block (11) sequentially passes through the corresponding straight sliding groove (9) and arc-shaped groove (10) through a push rod (12). When the rotating disc (6) rotates, the inner end of each press force block (11) can be moved close to each other to clamp or move away from each other to release. The mounting shell (1) is provided with a central hole (13) for placing a support to be pressed in the center of the press disc (8). The rotating press mechanism further comprises a locking mechanism for locking the rotating shaft (3).
2. The stent crimping device of claim 1, wherein, The locking mechanism comprises a ratchet wheel (14), a limiting block (15), a limiting rod, a sliding block (16) and a lever (17). The left side wall of the mounting shell (1) is fixedly provided with a sleeve (18) which is in communication with the inner cavity and is used for accommodating the rotating shaft (3). The inner wall of the sleeve (18) is provided with a guide sliding groove which is in sliding cooperation with the sliding block (16). One end of the lever (17) is fixedly connected with one end of the limiting rod, and the sliding block (16) is fixedly connected at the connection. The other end of the limiting rod is fixedly connected with the limiting block (15). The side wall of the sleeve (18) is provided with an L-shaped limiting groove (19). The other end of the lever (17) extends out of the limiting groove (19). The ratchet wheel (14) is fixedly connected with the hand lever (2). When the lever (17) is pushed, the limiting block (15) is inserted into the tooth groove of the ratchet wheel (14) to lock the hand lever (2) and the rotating shaft (3).
3. The stent crimping device of claim 2, wherein, The lock release mechanism further comprises a spring (20), one end of which is sleeved on the end of the limiting rod away from the limiting block (15), and the other end is abutted against the circular ring step surface on the rotating shaft (3), the end of the rotating shaft (3) away from the hand lever (2) is fixedly connected with the mounting shell (1) through the first sleeve (21) externally sleeved on the rotating shaft (3) and coaxially fixed with the first gear (4), and the circular ring step surface is the end face of the cylindrical body.
4. The stent crimping device of claim 1, wherein, The mounting shell (1) comprises a first shell (22) on the left side and a second shell (23) on the right side, an inner convex circular ring (24) coaxial with the center hole (13) is arranged on the inner side of the second shell (23), and the rotating disc (6) is rotatably connected to the inner convex circular ring (24) through a center hole.
5. The stent crimping device of claim 4, wherein, The second sleeve (25) is a ball bearing or a PTFE shaft sleeve.
6. The stent crimping device of claim 4, wherein, The first shell (22) and the second shell (23) are connected by bolts.
7. The stent crimping device of claim 1, wherein, The material of the pressure applying force block (11) is PTFE.
8. A stent crimping device according to any one of claims 1 to 7, wherein The outer end of the pressure applying force block (11) is hingedly connected to the outer side of the driving disc (7) through an outer connecting column (26), and the inner ends of the pressure applying force blocks (11) on different layers are connected to each other through inner connecting columns (27).
9. A conveyor loading device characterized by, The bottom plate (28) is horizontally arranged, the conveyor clamping transmission mechanism and the bracket holder are fixedly installed above the bottom plate (28), the conveyor clamping transmission mechanism comprises a pedestal (29) fixedly connected with the bottom plate (28), a translation sliding groove (30) is formed in the upper surface of the pedestal (29) in the left-right direction, a translation sliding block (31) is slidably connected in the translation sliding groove (30), a lead screw (32) is rotatably connected to the upper surface of the pedestal (29) and is screw-connected with the translation sliding block (31), one end of the lead screw (32) protrudes from the pedestal (29) and is fixedly connected with a hand wheel (33), a lower clamping block (35) is fixedly arranged on the upper portion of the translation sliding block (31), an upper clamping block (34) is arranged on the lower clamping block (35), a clamping groove (36) for clamping a conveyor tube is arranged between the upper clamping block (34) and the lower clamping block (35), and the central axis of the conveyor tube clamped in the clamping groove (36) is aligned with the central axis of the center hole (13) at the right end of the bracket holder.
10. A delivery loading apparatus according to claim 9, wherein, One side of the upper clamping block (34) is hingedly connected with one side of the lower clamping block (35) through a hinge (37), and the other side of the upper clamping block (34) is detachably connected with the other side of the lower clamping block (35) through a lock buckle (38).