Oral and maxillofacial surgery T-shaped forceps with supporting structure
By setting an arc elastic sheet on the inner wall of the movable cavity of the oral and maxillofacial surgical thpliers and designing a support mechanism and an ejection mechanism, the problems of unstable equipment and prone to depression in the prior art are solved, and more efficient oral support and emergency use of equipment are achieved.
Patent Information
- Application Number
- CN202420935343.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing oral and maxillofacial surgical thpliers are unstable during use and are difficult to effectively support the patient's oral cavity. The arc-shaped elastic sheet is softer and prone to depression due to the patient's bite. It is prone to irreversible deformation during long-term use.
A oral and maxillofacial surgical thpin with a support structure is designed. By setting an arc elastic piece on the inner wall of the movable cavity of the internal threaded barrel, and a support mechanism and an ejection mechanism are provided in the middle. The support mechanism fixes and supports the arc elastic piece through components such as rotating bearings, support gears and sliding racks. The ejection mechanism realizes the emergency use of the equipment in the slippery wire state through components such as ejection rods and extrusion springs.
It improves the support effect of the equipment on the patient's oral cavity, avoids the recession of arc-shaped elastic sheets due to occlusal, increases the efficiency of medical staff in oral examination or treatment of patients, and solves the problem of slip wire caused by long-term use of the equipment, and realizes the emergency use of the equipment.
Smart Images
Figure CN222722986U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a T-shaped forceps for oral and maxillofacial surgery with a supporting structure. Background Art
[0002] Oral retractors are the most commonly used surgical instruments in oral and maxillofacial surgery. Common types include T-shaped openers and pliers openers, but they have certain usage defects. For example, the center of gravity of T-shaped openers and pliers openers is far from the support point, making them unstable during use. Specifically, when using them, one needs to hold the front end with one hand to determine the opening point, and adjust the opening range of the retractor with the other hand. After multiple adjustments, it is more laborious to use. Therefore, this type of retractor is more suitable for larger opening ranges, such as when the mouth needs to be fully opened.
[0003] In the prior art, relevant mouth openers that use two arc-shaped elastic sheets for opening have been reported, which change the traditional point support into surface support, and have the advantages of small size and easy adjustment, and are suitable for half-open mouth and other situations. However, in actual use, it is found that in order to achieve the characteristic of easy adjustment, the arc-shaped elastic sheet is made of a relatively soft material. When supporting the patient's mouth, the patient will subconsciously bite down on the two arc-shaped elastic sheets, causing the center of the arc-shaped elastic sheet to sink downward when supporting the patient's mouth, reducing the supporting effect on the patient's mouth. In addition, the arc-shaped elastic sheet is prone to irreversible deformation after long-term use. After being replaced with a hard metal material, the difficulty of adjustment is increased, affecting the efficiency of medical staff in examining or treating the patient's mouth. Summary of the invention
[0004] In order to solve the above-mentioned problems, the utility model adopts the following technical scheme: an oral and maxillofacial surgical T-shaped forceps with a supporting structure, comprising an internal threaded barrel, the inner wall of which is threadedly connected to a threaded tube, a connecting rod is arranged at one end of the threaded tube, an active cavity is penetrated through the outer contour of the internal threaded barrel, an arc-shaped elastic sheet is arranged on the inner wall of the active cavity, a supporting mechanism is arranged in the middle of the inner wall of the active cavity, an active block fixedly connected to the inner wall of the active cavity is arranged on one side of the arc-shaped elastic sheet, and a fixed block is arranged on the other side of the arc-shaped elastic sheet.
[0005] As a further description of the above technical solution:
[0006] The supporting mechanism includes a rotating bearing arranged in the middle of the inner wall of the movable cavity, the inner wall of the rotating bearing is rotatably connected to a rotating rod, a cavity is opened on the side of the connecting rod close to the rotating rod, a connecting ring is fixedly connected to the inner wall of the cavity close to one end of the rotating rod, four connecting blocks are arranged in an array on the inner wall of the connecting ring, and four connecting grooves for the connecting blocks to be clamped are arranged in an array on the outer contour of the cavity.
[0007] As a further description of the above technical solution:
[0008] The support mechanism also includes a supporting gear fixedly connected to the middle part of the rotating rod, fixed rods are symmetrically fixedly connected to the two sides of the inner wall of the movable cavity, fixed plates are fixedly connected to the ends of the fixed rods, and a sliding rack is slidably connected to the side of the fixed plate away from the fixed rod, and the teeth of the sliding rack are meshed with the teeth of the supporting gear.
[0009] As a further description of the above technical solution:
[0010] A clamping block is fixedly connected to one end of the threaded tube close to the connecting rod, and a clamping groove for clamping the clamping block is provided on the connecting rod.
[0011] As a further description of the above technical solution:
[0012] A pop-up mechanism is arranged in the threaded tube, and the pop-up mechanism comprises a screw groove opened on the inner wall of the threaded tube, a screw rod is threadedly connected to the inner wall of the screw groove, one end of the screw rod is fixedly connected to the connecting rod, and a pop-up groove is arranged at the other end of the screw, an extrusion spring is arranged on one side of the inner wall of the pop-up groove, a baffle is fixedly connected to the end of the extrusion spring, an ejection rod is fixedly connected to the side of the baffle away from the extrusion spring, an inner wall of the ejection groove away from the screw groove is detachably connected to an inner hexagonal threaded ring, a clamping groove is opened on the outer contour of the ejection rod, and a clamping block slidably connected to the clamping groove is fixedly connected to the inner wall of the screw groove.
[0013] As a further description of the above technical solution:
[0014] A rotating ring is fixedly connected to the bottom of the fixed block, and a rotating groove for the rotating ring to be rotatably connected is provided on the connecting rod.
[0015] As a further description of the above technical solution:
[0016] A thread groove is provided on one side of the inner wall of the ejection groove close to the clamping block and is threadedly connected to the hexagonal thread ring through the thread groove.
[0017] The utility model has the following beneficial effects:
[0018] 1. Compared with the prior art, the T-shaped forceps for oral and maxillofacial surgery with a supporting structure can fix and support the raised arc-shaped elastic sheet through the provided supporting mechanism, thereby increasing the supporting effect of the device on the patient's oral cavity, avoiding depression when the patient bites, and also increasing the efficiency of medical staff in examining or treating the patient's oral cavity.
[0019] 2. Compared with the prior art, the T-shaped forceps for oral and maxillofacial surgery with a supporting structure can avoid the problem of thread slippage between the threaded rod and the internal thread opened in the barrel of the existing equipment due to long-term use, etc. The ejecting rod can make the equipment usable in an emergency, thereby increasing the efficiency of medical staff in examining or treating patients. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of the T-shaped forceps for oral and maxillofacial surgery with a support structure proposed by the utility model;
[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the T-shaped forceps for oral and maxillofacial surgery with a support structure proposed by the utility model;
[0022] Figure 3 The utility model provides a T-shaped forceps for oral and maxillofacial surgery with a supporting structure. Figure 2 A schematic diagram of the enlarged structure of
[0023] Figure 4 This is a schematic diagram of the main structure of the support mechanism of the T-shaped forceps for oral and maxillofacial surgery with a support structure proposed by the utility model;
[0024] Figure 5 The utility model provides a T-shaped forceps for oral and maxillofacial surgery with a supporting structure. Figure 2 Schematic diagram of the enlarged structure at B.
[0025] Legend:
[0026] 1. Internal threaded barrel; 2. Threaded tube; 3. Connecting rod; 4. Movable cavity; 5. Arc-shaped elastic sheet; 6. Fixed block; 7. Rotating ring; 8. Rotating groove; 10. Rotating bearing; 11. Rotating rod; 12. Cavity; 13. Connecting ring; 14. Connecting block; 15. Connecting groove; 16. Support gear; 17. Fixed rod; 18. Fixed plate; 19. Sliding rack; 20. Snap-in block; 21. Snap-in groove; 22. Screw rod; 23. Screw groove; 24. Pop-up groove; 25. Extrusion spring; 26. Baffle; 27. Pop-up rod; 28. Snap-in groove; 29. Snap-in block; 30. Internal hexagonal threaded ring; 51. Movable block. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] Reference Figure 1-5 The oral and maxillofacial surgical T-shaped forceps with a supporting structure provided by the utility model include an internal threaded barrel 1, the inner wall of the internal threaded barrel 1 is threadedly connected with a threaded tube 2, one end of the threaded tube 2 is provided with a connecting rod 3, an outer contour of the internal threaded barrel 1 is penetrated with an active cavity 4, the inner wall of the active cavity 4 is provided with an arc-shaped elastic sheet 5, the middle part of the inner wall of the active cavity 4 is provided with a supporting mechanism, one side of the arc-shaped elastic sheet 5 is provided with an active block 51 fixedly connected to the inner wall of the active cavity 4, the other side of the arc-shaped elastic sheet 5 is provided with a fixed block 6, the bottom of the fixed block 6 is fixedly connected with a rotating ring 7, and a rotating groove 8 for the rotating ring 7 to be rotatably connected is provided on the connecting rod 3;
[0029] The medical staff rotates the threaded tube 2 to move inside the internal threaded tube 1, thereby driving the connecting rod 3 to move inside the internal threaded tube 1 toward the depth of the active cavity 4, thereby causing the two arc-shaped elastic sheets 5 in the active cavity 4 to protrude outward, causing the arc-shaped elastic sheets 5 to deform, thereby supporting the patient's oral cavity. When the threaded tube 2 drives the connecting rod 3 to move, it also drives it to rotate. The rotating connecting rod 3 enables the supporting mechanism to work, and the deformed arc-shaped elastic sheet 5 is supported by the supporting mechanism, so that the supporting effect of the arc-shaped elastic sheet 5 is increased when the equipment is working.
[0030] The supporting mechanism includes a rotating bearing 10 arranged in the middle of the inner wall of the movable cavity 4, and a rotating rod 11 is rotatably connected to the inner wall of the rotating bearing 10. A cavity 12 is provided on the side of the connecting rod 3 close to the rotating rod 11, and a connecting ring 13 is fixedly connected to the inner wall of the cavity 12 close to one end of the rotating rod 11. Four connecting blocks 14 are arranged in an array on the inner wall of the connecting ring 13, and four connecting grooves 15 for the connecting blocks 14 to be clamped are arranged in an array on the outer contour of the cavity 12. The supporting mechanism also includes a supporting gear 16 fixedly connected to the middle of the rotating rod 11, fixed rods 17 are symmetrically fixedly connected to the two sides of the inner wall of the movable cavity 4, and a fixed plate 18 is fixedly connected to the end of the fixed rod 17. A sliding rack 19 is slidably connected to the side of the fixed plate 18 away from the fixed rod 17, and the teeth of the sliding rack 19 are meshed with the teeth of the supporting gear 16. A clamping block 20 is fixedly connected to the end of the threaded tube 2 close to the connecting rod 3, and a clamping groove 21 for the clamping block 20 to be clamped is provided on the connecting rod 3;
[0031] By engaging the engaging block 20 on the threaded tube 2 in the engaging groove 21 provided on the connecting rod 3, the medical staff drives the connecting rod 3 to move and rotate toward the depth of the active cavity 4 through the rotating threaded tube 2, so that the arc-shaped elastic sheet 5 in the active cavity 4 is deformed, and at the same time, the connecting ring 13 on the inner wall of the cavity 12 is driven to rotate through the rotating connecting rod 3, and the connecting block 14 on its inner wall is driven to rotate by the rotating connecting ring 13, so that the connecting block 14 engaged in the connecting groove 15 drives the rotating rod 11 to rotate, and the supporting gear 16 on its outer contour is driven to rotate through the rotating rotating rod 11, thereby driving the sliding racks 19 on both sides of the supporting gear 16 that are meshed with each other to move upward and downward respectively on the two fixed plates 18, so that the deformed arc-shaped elastic sheet 5 is supported by the fixed rod 17.
[0032] The ejection mechanism includes a screw groove 23 provided on the inner wall of the threaded tube 2, the inner wall of the screw groove 23 is threadedly connected with a screw rod 22, one end of the screw rod 22 is fixedly connected to the connecting rod 3, and the other end of the screw rod 22 is provided with an ejection groove 24, one side of the inner wall of the ejection groove 24 is provided with an extrusion spring 25, the end of the extrusion spring 25 is fixedly connected with a baffle plate 26, and a side of the baffle plate 26 away from the extrusion spring 25 is fixedly connected with an ejection rod 27, and the inner wall of the ejection groove 24 away from the screw groove 23 is detachably connected with an inner hexagonal threaded ring 30, and a clamping groove 28 is provided on the outer contour of the ejection rod 27, and a clamping block 29 slidably connected to the clamping groove 28 is fixedly connected to the inner wall of the screw groove 23, and a threaded groove is provided on the inner wall of the ejection groove 24 near the clamping block 29 and is threadedly connected to the inner hexagonal threaded ring 30 through the threaded groove;
[0033] When the threaded tube 2 in the internal threaded barrel 1 has a thread-slipping phenomenon due to long-term operation, the operator takes out the hexagonal bolt and clamps it with the inner wall of the internal hexagonal threaded ring 30, then rotates the internal hexagonal threaded ring 30 to remove it from the ejection groove 24, and uses the squeezed extrusion spring 25 to drive the ejection rod 27 on the baffle 26 to eject from the ejection groove 24, so that the slot 28 on the ejection rod 27 slides with the block 29. When the ejection rod 27 is ejected, the operator rotates the ejection rod 27 to drive the slot 28 clamped in the block 29 to rotate. Because the slot 28 is fixed to the inner wall of the ejection groove 24, the ejection groove 24 drives the screw rod 22 to rotate in the inner thread of the screw groove 23, and drives the connecting rod 3 fixed to it through the screw 22. By rotating and moving, the movable cavity 4 can drive the arc-shaped elastic sheet 5 to deform again. At the same time, the connecting ring 13 on the inner wall of the cavity 12 can be driven to rotate through the rotating connecting rod 3. The rotating connecting ring 13 can be used to drive the connecting block 14 on its inner wall to rotate, so that the connecting block 14 engaged in the connecting groove 15 drives the rotating rod 11 to rotate. The rotating rotating rod 11 drives the supporting gear 16 on its outer contour to rotate, thereby driving the sliding racks 19 on both sides of the supporting gear 16 that are meshed with each other to move upward and downward on the two fixed plates 18 respectively. The deformed arc-shaped elastic sheet 5 is supported by the fixed rod 17, so that the equipment can be used in an emergency when it is in a slipped state or when there are fewer spare parts for the equipment.
[0034] Working principle: by clamping the clamping block 20 on the threaded tube 2 into the clamping groove 21 provided on the connecting rod 3, the medical staff drives the connecting rod 3 to move and rotate toward the depth of the active cavity 4 through the rotating threaded tube 2, so that the arc-shaped elastic sheet 5 in the active cavity 4 is deformed, and at the same time, the connecting ring 13 on the inner wall of the cavity 12 is driven to rotate through the rotating connecting rod 3, and the connecting block 14 on its inner wall is driven to rotate by the rotating connecting ring 13, so that the connecting block 14 clamped in the connecting groove 15 drives the rotating rod 11 to rotate, and the supporting gear 16 of its outer contour is driven to rotate through the rotating rotating rod 11, thereby driving the sliding racks 19 on both sides of the supporting gear 16 that are meshed with each other to move upward and downward respectively on the two fixed plates 18, so that the deformed arc-shaped elastic sheet 5 is supported by the fixed rod 17.
[0035] When the threaded tube 2 in the internal threaded barrel 1 is stripped due to long-term work, the operator takes out the hexagonal bolt and clamps it with the inner wall of the internal hexagonal threaded ring 30, then rotates the internal hexagonal threaded ring 30 to remove it from the ejection groove 24, and uses the squeezed extrusion spring 25 to drive the ejection rod 27 on the baffle 26 to pop out from the ejection groove 24, so that the slot 28 on the ejection rod 27 slides with the block 29. When the ejection rod 27 is ejected, the operator rotates the ejection rod 27 to drive the slot 28 clamped in the block 29 to rotate. Because the slot 28 is fixed to the inner wall of the ejection groove 24, the ejection groove 24 drives the screw rod 22 to rotate in the inner thread of the screw groove 23, and the screw rod 22 drives the connecting rod 3 fixed thereto to rotate and move. At this time, the movable cavity 4 can drive the arc-shaped elastic sheet 5 to deform again, and then repeat the above-mentioned operation process, and the deformed arc-shaped elastic sheet 5 can be supported by the fixed rod 17, so that the equipment can be used in an emergency when it is in a stripped state or when there are fewer spare parts for the equipment.
[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An oral and maxillofacial surgical T-shaped forceps with a support structure, comprising an internally threaded barrel, characterized in that: The inner wall of the internal threaded barrel is threadedly connected with a threaded tube, a connecting rod is arranged at one end of the threaded tube, an active cavity is penetrated through the outer contour of the internal threaded barrel, an arc-shaped elastic sheet is arranged on the inner wall of the active cavity, a supporting mechanism is arranged in the middle of the inner wall of the active cavity, an active block fixedly connected to the inner wall of the active cavity is arranged on one side of the arc-shaped elastic sheet, and a fixed block is arranged on the other side of the arc-shaped elastic sheet.
2. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 1, characterized in that: The supporting mechanism includes a rotating bearing arranged in the middle of the inner wall of the movable cavity, the inner wall of the rotating bearing is rotatably connected to a rotating rod, a cavity is opened on the side of the connecting rod close to the rotating rod, a connecting ring is fixedly connected to the inner wall of the cavity close to one end of the rotating rod, four connecting blocks are arranged in an array on the inner wall of the connecting ring, and four connecting grooves for the connecting blocks to be clamped are arranged in an array on the outer contour of the cavity.
3. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 2, characterized in that: The support mechanism also includes a supporting gear fixedly connected to the middle part of the rotating rod, fixed rods are symmetrically fixedly connected to the two sides of the inner wall of the movable cavity, fixed plates are fixedly connected to the ends of the fixed rods, and a sliding rack is slidably connected to the side of the fixed plate away from the fixed rod, and the teeth of the sliding rack are meshed with the teeth of the supporting gear.
4. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 1, characterized in that: A clamping block is fixedly connected to one end of the threaded tube close to the connecting rod, and a clamping groove for clamping the clamping block is provided on the connecting rod.
5. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 4, characterized in that: A pop-up mechanism is arranged in the threaded tube, and the pop-up mechanism comprises a screw groove opened on the inner wall of the threaded tube, a screw rod is threadedly connected to the inner wall of the screw groove, one end of the screw rod is fixedly connected to the connecting rod, and a pop-up groove is arranged at the other end of the screw, an extrusion spring is arranged on one side of the inner wall of the pop-up groove, a baffle is fixedly connected to the end of the extrusion spring, an ejection rod is fixedly connected to the side of the baffle away from the extrusion spring, an inner wall of the ejection groove away from the screw groove is detachably connected to an inner hexagonal threaded ring, a clamping groove is opened on the outer contour of the ejection rod, and a clamping block slidably connected to the clamping groove is fixedly connected to the inner wall of the screw groove.
6. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 1, characterized in that: A rotating ring is fixedly connected to the bottom of the fixed block, and a rotating groove for the rotating ring to be rotatably connected is provided on the connecting rod.
7. The T-shaped forceps for oral and maxillofacial surgery with a support structure according to claim 5, characterized in that: A thread groove is provided on one side of the inner wall of the ejection groove close to the clamping block and is threadedly connected to the hexagonal thread ring through the thread groove.