A depth measuring device for transnasal surgery

Abstract

The utility model discloses a deep measuring device for transnasal surgery, comprising an outer sleeve and a handle arranged at the rear end of the outer sleeve, a central rod with a front end extending out of the outer sleeve is arranged in the outer sleeve, a first U-shaped opening is arranged at the front end of the central rod, a first groove and a second groove communicating with the first U-shaped opening are arranged on both sides, the rear end is connected with the handle, a measuring rod with a first scale on the front side opposite to the side wall of the first U-shaped opening is slidably arranged in the first groove, an angle adjustment rod is slidably arranged in the second groove, an angle guide tube with a front part extending out of the front end of the first U-shaped opening is hingedly arranged at the front end of the second groove in the first U-shaped opening, the front end of the measuring rod slides through the angle guide tube, a connecting rod hinged at the front end of the angle adjustment rod is arranged between the outer side wall of the angle guide tube and the front end of the angle adjustment rod, and an opening is arranged on the side opposite to the first scale of the front end of the measuring rod on the angle guide tube extending out of the front of the first U-shaped opening. The utility model can measure the size of the bone defect part.

Description

Technical Field

[0001] The utility model relates to a medical measuring instrument, in particular to a deep measuring instrument used for transnasal surgery. Background Art

[0002] With the advancement of medical diagnostic technology, more and more neurosurgery and otolaryngology departments are removing tumors and lesions located near the anterior and middle skull base, such as meningiomas in various parts of the anterior skull base, sellar pituitary tumors, craniopharyngiomas, various cysts and cerebrospinal fluid leaks, with the assistance of microscopes or neuroendoscopes, through natural cavities such as oral, nasal, ethmoid, sphenoid or keyhole transfrontal resection, which is gentle on the face, less invasive, and shorter. The transsphenoidal surgical approach is used because of its less trauma and faster recovery. In addition to shortening the operation time, it also greatly improves the surgical effect. It is chosen by more and more doctors and is being widely carried out.

[0003] More and more neurosurgery and otolaryngology departments are treating tumors and lesions located near the anterior and middle skull base, such as meningiomas in various parts of the anterior skull base, sellar pituitary tumors, craniopharyngiomas, various cysts, and cerebrospinal fluid leakage. Under the assistance of a microscope or neuroendoscope, the usual transsphenoidal approach is used to remove sellar pituitary tumors, craniopharyngiomas, and other lesions, often leaving skull defects in the sellar base. Transethmoid skull base meningioma resection or cerebrospinal fluid leakage repair often leaves skull defects in the cribriform plate. The size of the bone defect needs to be measured during the operation, but the existing technology lacks special tools and mainly relies on the subjective experience of the surgeon. In addition, the surgical channel is small, but the size that needs to be measured is large, which greatly increases the difficulty of clinical operation, prolongs the clinical operation time, and improves the technical sensitivity. Utility Model Content

[0004] The utility model aims to provide a deep measuring device for transnasal surgery in order to overcome the shortcomings of the prior art and solve the problem that the size of the bone defect cannot be measured when repairing skull defects.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a deep measuring instrument for transnasal surgery, comprising an outer sleeve and a handle arranged at the rear end of the outer sleeve, characterized in that a central rod with a front end extending out of the outer sleeve is arranged in the outer sleeve, a first U-shaped opening is arranged at the front end of the central rod, a first groove and a second groove connected to the first U-shaped opening are arranged on both sides, and the rear end is connected to the handle, a measuring rod with a first scale on the front surface opposite to the side wall of the first U-shaped opening is slidably arranged in the first groove, an angle adjustment rod is slidably arranged in the second groove, an angle guide tube with a front end extending out of the front end of the first U-shaped opening is hingedly arranged in the front end of the second groove in the first U-shaped opening, The front part of the measuring rod slides through the angle guide tube, and a connecting rod is provided between the outer side wall of the angle guide tube and the front end of the angle adjustment rod, one end of the connecting rod is fixed on the outer side wall of the angle guide tube, and the other end is hinged at the front end of the angle adjustment rod, and an opening is provided on the front side of the angle guide tube extending out of the first U-shaped opening and opposite to the first scale of the front part of the measuring rod, a moving button is provided on the outer side of the tail end of the measuring rod, and a pushing button is provided on the outer side of the tail end of the angle adjustment rod, a third groove is provided on the side wall of the rear part of the outer sleeve opposite to the first groove, and a fourth groove is provided on the side wall opposite to the second groove, the moving button is slidably arranged in the third groove, and the push button is slidably arranged in the fourth groove.

[0006] Furthermore, limiting holes are symmetrically provided on the two side walls opposite to each other of the first U-shaped opening at the front end of the second groove, a second U-shaped opening is provided at the front end of the angle adjustment rod, and the front end of the angle adjustment rod is arranged in the first U-shaped opening, the connecting rod is hingedly arranged in the second U-shaped opening through a rotating shaft, and both ends of the rotating shaft are respectively slidably arranged in the corresponding limiting holes.

[0007] Furthermore, an arc-shaped groove is provided at the front end of the measuring rod.

[0008] Furthermore, a plurality of angle slots are provided on the outer side wall of the rear portion of the outer sleeve in front of the fourth groove, and a latching tooth is provided on the surface opposite to the slot at the front end of the push button, and the latching tooth is arranged in the slot.

[0009] Furthermore, a second scale consistent with the first scale is provided on the outer side wall of the rear portion of the measuring rod at the third groove, and a scale indicating arrow matching the second scale is provided on the side of the outer sleeve at the third groove.

[0010] Furthermore, the measuring rod is made of nickel-titanium alloy material.

[0011] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a deep measuring instrument for transnasal surgery, which has a compact structure, opens a larger size in a smaller channel, is easier to insert into the surgical site, is opened and closed from the end away from the patient, does not cause harm to the patient, is more convenient to operate, and the measuring angle can be fixed. The measuring rod is made of nickel-titanium alloy material and can be changed at will according to the measuring angle. It can be restored to its original state after the measurement. It can measure at multiple angles, both in diameter and depth directions, making the measurement more accurate, and the reading more convenient and comprehensive. An arc groove is provided at the front end of the measuring rod to facilitate the measurement of uneven or irregular parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0013] Figure 1 The utility model is a schematic diagram of the structure of the depth measuring device used for transnasal surgery.

[0014] Figure 2 for Figure 1 Enlarged view of point A.

[0015] Figure 3 It is a structural schematic diagram of the connection between the measuring rod and the angle adjustment rod described in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the central rod described in the utility model.

[0017] Figure 5 The present invention is a schematic structural diagram of the depth measuring device for transnasal surgery with a second scale side.

[0018] Figure 6 It is a structural schematic diagram of the connection between the front end of the angle adjustment rod and the connecting rod according to the utility model.

[0019] Among them: 1. outer sleeve; 2. handle; 3. center rod; 4. first U-shaped opening; 5. first groove; 6. second groove; 7. first scale; 8. measuring rod; 9. angle adjustment rod; 10. angle guide tube; 11. connecting rod; 12. opening; 13. moving button; 14. pushing button; 15. third groove; 16. fourth groove; 17. limiting hole; 18. second U-shaped opening; 19. rotating shaft; 20. arc groove; 21. card slot; 22. card tooth; 23. second scale; 24. scale indicator arrow. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] Aiming at the demand for skull defect repair in transnasal surgery, the designer of the utility model innovatively proposes a deep measuring device for transnasal surgery, which can measure the size of the skull defect portion to be repaired.

[0022] like Figures 1 to 6 As shown, a deep measuring instrument for transnasal surgery comprises an outer sleeve 1 and a handle 2 arranged at the rear end of the outer sleeve 1, characterized in that a center rod 3 with a front end extending out of the outer sleeve 1 is provided in the outer sleeve 1, a first U-shaped opening 4 is provided at the front end of the center rod 3, a first groove 5 and a second groove 6 connected to the first U-shaped opening 4 are provided on both sides, and the rear end is connected to the handle 2, a measuring rod 8 with a first scale 7 on the front side opposite to the side wall of the first U-shaped opening 12 is slidably provided in the first groove 5, an angle adjustment rod 9 is slidably provided in the second groove 6, an angle guide tube 10 extending out of the front end of the first U-shaped opening 4 is hingedly provided at the front end of the second groove 6 in the first U-shaped opening 4, the angle of the angle guide tube 10 is controlled by 0 degrees-90 degrees, and the front of the measuring rod 8 Slide through the angle guide tube 10, a connecting rod 11 is provided between the outer wall of the angle guide tube 10 and the front end of the angle adjustment rod 9, one end of the connecting rod 11 is fixed on the outer wall of the angle guide tube 10, and the other end is hinged to the front end of the angle adjustment rod 9, the front part of the angle guide tube 10 extending out of the first U-shaped opening 4 is provided with an opening 12 on the side opposite to the first scale 7 at the front of the measuring rod 8, a moving button 13 is provided on the outer side of the tail end of the measuring rod 8, and a pushing button 14 is provided on the outer side of the tail end of the angle adjustment rod 9, a third groove 15 is provided on the side wall opposite to the first groove 5 at the rear of the outer sleeve 1, and a fourth groove 16 is provided on the side wall opposite to the second groove 6, the moving button 13 is slidably set in the third groove 15, and the pushing button 14 is slidably set in the fourth groove 16.

[0023] Limiting holes 17 are symmetrically provided on the opposite side walls of the first U-shaped opening 4 at the front end of the second groove 6, a second U-shaped opening 18 is provided at the front end of the angle adjustment rod 9, and the front end of the angle adjustment rod 9 is arranged in the first U-shaped opening 4, the connecting rod 11 is hingedly arranged in the second U-shaped opening 18 through a rotating shaft 19, and the two ends of the rotating shaft 19 are respectively slidably arranged in the corresponding limiting holes 17 to limit the angle of the angle guide tube 10 from being too large or too small.

[0024] The front end of the measuring rod 8 is provided with an arc-shaped groove 20 to facilitate the measurement of uneven or irregular parts.

[0025] The outer wall of the rear part of the outer sleeve 1 is located in front of the fourth groove 16 and is provided with a plurality of angle slots 21. The front end of the push button 14 is provided with a latch tooth 22 on the surface opposite to the slot 21. The latch tooth 22 is arranged in the slot 21 to facilitate precise adjustment of the angle of the angle guide tube 10.

[0026] The outer wall of the rear part of the measuring rod 8 is provided with a second scale 23 consistent with the first scale 7 at the third groove 15, and the outer sleeve 1 is provided with a scale indication arrow 24 matching the second scale 23 at the side of the third groove 15, so that the measurement data can be read externally.

[0027] The measuring rod 8 is made of nickel-titanium alloy material and can be changed at will according to the measuring angle and can be restored to its original state after the measurement.

[0028] Before use, the angle guide tube 10 and the center rod 3 are in a horizontal straight line. At this time, the angle of the angle guide tube 10 is 0 degrees. When in use, after the measuring device is placed in the measuring part, the push button 14 is pushed backward, the angle adjustment rod 9 moves backward, and the angle of the angle guide tube 10 changes from 0 degrees to 90 degrees. The doctor pushes the angle adjustment rod 9 backward according to the required angle and clamps the tooth 22 of the push button 14 in the corresponding groove 21 to fix the angle, and then pushes the measuring rod 8 forward. The measuring rod 8 extends through the angle guide tube 10, and the arc groove 20 at the front end of the measuring rod 8 fits the unevenness. Or for irregular measuring parts, the required measuring parts are measured according to the angle bending of the angle of the angle guide tube 10, and the measuring data of the measuring part are directly read through the first scale 7 at the front end of the measuring rod 8, or the measuring data of the second scale 23 at the rear end of the measuring rod 8 is read by the scale indication arrow 24. After the measurement is completed, the measuring rod 8 is pushed backward, the measuring rod 8 is retracted, and then the angle adjustment rod 9 is pushed forward to adjust the angle of the angle guide tube 10 to 0 degrees, and the measuring device is taken out. When the measuring space is larger than the angle of the angle guide tube 10, it is not necessary to adjust it to 0 degrees, and the measuring device can be directly taken out.

[0029] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a deep measuring instrument for transnasal surgery, which has a compact structure, opens a larger size in a smaller channel, is easier to insert into the surgical site, is opened and closed from the end away from the patient, does not cause harm to the patient, is more convenient to operate, and the measuring angle can be fixed. The measuring rod is made of nickel-titanium alloy material and can be changed at will according to the measuring angle. It can be restored to its original state after the measurement. It can measure at multiple angles, both in diameter and depth directions, making the measurement more accurate, and the reading more convenient and comprehensive. An arc groove is provided at the front end of the measuring rod to facilitate the measurement of uneven or irregular parts.

[0030] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A depth measuring device for transnasal surgery, comprising an outer sleeve and a handle arranged at the rear end of the outer sleeve, characterized in that: A central rod with a front end extending out of the outer sleeve is provided in the outer sleeve, a first U-shaped opening is provided at the front end of the central rod, a first groove and a second groove communicating with the first U-shaped opening are provided on both sides, and the tail end is connected to the handle, a measuring rod with a first scale on the front side opposite to the side wall of the first U-shaped opening is slidably provided in the first groove, an angle adjustment rod is slidably provided in the second groove, an angle guide tube with a front end extending out of the front end of the first U-shaped opening is hingedly provided at the front end of the second groove in the first U-shaped opening, the front of the measuring rod slides through the angle guide tube, a connecting rod is provided between the outer side wall of the angle guide tube and the front end of the angle adjustment rod, one end of the connecting rod is fixed on the outer side wall of the angle guide tube, and the other end is hinged at the front end of the angle adjustment rod, an opening is provided on the front side of the angle guide tube extending out of the first U-shaped opening and opposite to the first scale of the front part of the measuring rod, a moving button is provided on the outside of the tail end of the measuring rod, and a pushing button is provided on the outside of the tail end of the angle adjustment rod, a third groove is provided on the side wall opposite to the first groove at the rear of the outer sleeve, and a fourth groove is provided on the side wall opposite to the second groove, the moving button is slidably arranged in the third groove, and the pushing button is slidably arranged in the fourth groove.

2. The depth measuring device for transnasal surgery according to claim 1, characterized in that: The front end of the second groove is symmetrically provided with limiting holes on the two side walls opposite to the first U-shaped opening, the front end of the angle adjustment rod is provided with a second U-shaped opening, and the front end of the angle adjustment rod is arranged in the first U-shaped opening, the connecting rod is hingedly arranged in the second U-shaped opening through a rotating shaft, and the two ends of the rotating shaft are respectively slidably arranged in the corresponding limiting holes.

3. The depth measuring device for transnasal surgery according to claim 1, characterized in that: An arc-shaped groove is arranged at the front end of the measuring rod.

4. The depth measuring device for transnasal surgery according to claim 1, characterized in that: The outer side wall of the rear part of the outer sleeve is provided with a plurality of angle slots in front of the fourth groove, and the front end of the push button is provided with a locking tooth on the surface opposite to the slot, and the locking tooth is arranged in the slot.

5. The depth measuring device for transnasal surgery according to claim 1, characterized in that: The outer side wall of the rear part of the measuring rod is provided with a second scale which is consistent with the first scale at the third groove, and the outer sleeve is provided with a scale indicating arrow which matches the second scale at the side of the third groove.

6. The depth measuring device for transnasal surgery according to claim 1, characterized in that: The measuring rod is made of nickel-titanium alloy material.

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