Scalpel

Abstract

The utility model relates to the technical field of surgical supplies, and discloses a surgical knife which comprises a first knife head used for cervical vertebra canalis expanding door opening. The first tool bit comprises a first body part, a first flat part and a protruding part. One end of the first flat part is connected with the first main body part and is used for being inserted into a cut cervical vertebral plate; the protruding parts are connected with the first flat part, the protruding parts are located on the two sides of the first flat part in the thickness direction of the first flat part, and the protruding parts on the two sides are used for achieving the limiting effect and achieving the over-depth limiting function. Therefore, the first flat part is prevented from being inserted too deep, iatrogenic injury to the spinal cord is prevented, and medical negligence is avoided or reduced. And the lever can be used as a fulcrum of the lever, so that the slotted cervical vertebral plate can be conveniently pried open. In the operation process, after the ultrasonic osteotome is used for cutting the cervical vertebra vertebral plate and a gap is formed, the gap can be expanded through the first tool bit.

Description

Technical Field

[0001] The present application relates to the technical field of surgical supplies, for example, to a scalpel. Background Art

[0002] During the cervical spinal canal expansion and opening surgery, the traditional surgical method is used, which causes more muscle stripping and more damage to the spinous process, resulting in severe pain after surgery. The use of minimally invasive surgery has less trauma, less bleeding, does not damage the spinous process, and can preserve the posterior ligament complex, so the postoperative recovery is fast. However, due to the lack of muscle stripping during the operation, muscle rebound will occur, so a scalpel must be used to expand the gap cut by the ultrasonic bone knife. As the number of operating tables of doctors increases, fatigue is prone to occur, which affects the accuracy of the operation. When the scalpel is inserted too deep into the gap of the cervical vertebral lamina, it is easy to cause iatrogenic damage to the spinal cord, resulting in medical accidents.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] The disclosed embodiments provide a surgical knife to avoid or reduce medical accidents.

[0006] In some embodiments, a surgical knife comprises: a first blade head, the first blade head comprising a first main body portion, a first flat portion and a raised portion, one end of the first flat portion is connected to the first main body portion, the raised portion is connected to the first flat portion, and along the thickness direction of the first flat portion, the raised portions are located on both sides of the first flat portion; wherein the distance between the other end of the first flat portion and the raised portions on both sides ranges from 3.5 to 4 mm, and the height of the raised portions on each side ranges from 1.5 mm to 2 mm.

[0007] Optionally, the width of the other end of the first flat portion ranges from 5 to 6 mm.

[0008] Optionally, the thickness of the other end of the first flat portion ranges from 0.5 mm to 1 mm.

[0009] Optionally, it also includes: a threaded rod, one end of which is detachably mounted on the first cutter head; a second cutter head, which is detachably mounted on the other end of the threaded rod; a flat cylinder, which is slidably mounted on the threaded rod and is located between the first cutter head and the second cutter head; a threaded cylinder, which is threadedly connected to the threaded rod and is located on both sides of the flat cylinder along the axial direction of the flat cylinder; wherein the flat cylinder is clamped between the threaded cylinders on both sides.

[0010] Optionally, the threaded rod includes: a first round rod portion, the first round rod portion includes a first external thread located on its side, and the threaded barrels on both sides are threadedly connected to the first external thread; a second round rod portion, respectively connected to both ends of the first round rod portion, and the second round rod portions at both ends include a second external thread located on their side; wherein the center line of the first round rod portion coincides with the center line of the second round rod portions on both sides.

[0011] Optionally, the first main body includes a first threaded hole located on an end surface thereof; wherein the first threaded hole is threadedly connected to one of the second external threads on both sides.

[0012] Optionally, the second cutter head includes: a second main body portion, threadedly connected to the other of the second external threads on both sides; and a second flat portion, connected to one end of the second main body portion.

[0013] Optionally, the second main body portion includes a second threaded hole located at the other end thereof; wherein the second threaded hole is threadedly connected to the other one of the second external threads on both sides.

[0014] Optionally, the flat cylinder includes conical grooves at both ends thereof; the threaded cylinders on both sides include conical protrusions on their end faces, and the shape and size of the conical protrusions at both ends match the shape and size of the conical grooves at both sides; wherein, when the flat cylinder is clamped between the threaded cylinders on both sides, the conical protrusions on both sides are located inside the conical grooves at both ends.

[0015] The scalpel provided in the embodiments of the present disclosure can achieve the following technical effects:

[0016] A scalpel provided in an embodiment of the present disclosure includes a first blade head for cervical spinal canal enlargement and opening. The first blade head includes a first main body, a first flat part and a raised part. One end of the first flat part is connected to the first main body and is used to be inserted into the cervical vertebral plate to be cut. The raised part is connected to the first flat part, and along the thickness direction of the first flat part, the raised parts are located on both sides of the first flat part, and the raised parts on both sides are used to limit the position, which plays a function of limiting too deep. And it can be used as a fulcrum of a lever to pry open the cervical vertebral plate to be cut. The distance between the other end of the first flat part and the raised parts on both sides ranges from 3.5 to 4 mm, and specifically, it can be 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm or 4.0 mm. By limiting the distance between the other end of the first flat part and the raised parts on both sides, the first flat part can be prevented from being inserted too deep, iatrogenic damage to the spinal cord can be prevented, and medical accidents can be avoided or reduced. The height of the protrusion on each side ranges from 1.5 mm to 2 mm, and specifically, can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 4.0 mm. By limiting the height of the protrusion on each side, the damage to the muscle can be reduced while ensuring the limiting function and the effect of serving as a fulcrum. During the operation, when the ultrasonic bone knife is used to cut the cervical vertebral plate and a gap is opened, the gap can be expanded through the first blade.

[0017] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0019] Figure 1 is a schematic cross-sectional structural diagram of a surgical knife provided by an embodiment of the present disclosure;

[0020] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 4 It is a schematic diagram of the main structure of a surgical knife provided in an embodiment of the present disclosure.

[0023] Reference numerals:

[0024] 10: first cutter head; 11: first main body; 12: first flat part; 13: raised part; 20: threaded rod; 21: first round rod; 22: second round rod; 30: second cutter head; 31: second main body; 32: second flat part; 40: flat cylinder; 50: threaded cylinder. DETAILED DESCRIPTION

[0025] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0026] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0028] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0029] Unless otherwise stated, the term "plurality" means two or more.

[0030] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0031] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0033] Combination Figures 1 to 4 As shown, the embodiment of the present disclosure provides a surgical knife, including a first blade head 10. The first blade head 10 includes a first main body portion 11, a first flat portion 12 and a raised portion 13. One end of the first flat portion 12 is connected to the first main body portion 11. The raised portion 13 is connected to the first flat portion 12, and along the thickness direction of the first flat portion 12, the raised portion 13 is located on both sides of the first flat portion 12. The distance between the other end of the first flat portion 12 and the raised portions 13 on both sides ranges from 3.5 to 4 mm, and the raised height of the raised portion 13 on each side ranges from 1.5 mm to 2 mm.

[0034] A scalpel provided in an embodiment of the present disclosure includes a first blade head 10 for cervical spinal canal enlargement and opening. The first blade head 10 includes a first main body 11, a first flat portion 12 and a raised portion 13. One end of the first flat portion 12 is connected to the first main body 11 and is used to be inserted into the cervical vertebral plate to be cut. The raised portion 13 is connected to the first flat portion 12, and along the thickness direction of the first flat portion 12, the raised portion 13 is located on both sides of the first flat portion 12, and the raised portions 1323 on both sides are used to limit the position, and play a function of limiting excessive depth. And it can be used as a fulcrum of a lever to pry open the cervical vertebral plate to be cut. The distance between the other end of the first flat portion 12 and the raised portions 13 on both sides ranges from 3.5 to 4 mm, and specifically, it can be 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm or 4.0 mm. By limiting the distance between the other end of the first flat portion 12 and the raised portions 13 on both sides, the first flat portion 12 can be prevented from being inserted too deeply, iatrogenic damage to the spinal cord can be prevented, and medical accidents can be avoided or reduced. The range of the raised height of each raised portion 13 is 1.5mm to 2mm, and specifically, it can be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 4.0mm. By limiting the raised height of each raised portion 13, the damage to the muscles can be reduced while ensuring the limiting function and the effect as a fulcrum. During the operation, when the ultrasonic bone knife is used to cut the cervical vertebral lamina and a gap is opened, the gap can be expanded by the first blade head 10.

[0035] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, the width of the other end of the first flat portion 12 ranges from 5 to 6 mm.

[0036] Specifically, the value may be 5 mm, 5.2 mm, 5.4 mm, 5.6 mm, 5.8 mm or 6 mm.

[0037] In the embodiment of the present disclosure, the value range of the width of the other end of the first flat portion 12 is limited to facilitate prying open the vertebral plate in the posterior cervical spine surgery.

[0038] Optionally, combined Figure 1 , Figure 2 and Figure 4 The thickness of the other end of the first flat portion 12 is in the range of 0.5 mm to 1 mm.

[0039] Specifically, the value can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 1 mm.

[0040] In the embodiment of the present disclosure, the thickness of the other end of the first flat portion 12 is limited in a value range, so as to facilitate insertion of bone sutures in posterior cervical spine surgery.

[0041] Optionally, combined Figure 1 and Figure 4 The figure also includes a threaded rod 20, a second cutter head 30, a flat cylinder 40 and a threaded cylinder 50. One end of the threaded rod 20 is detachably mounted on the first cutter head. The second cutter head 30 is detachably mounted on the other end of the threaded rod 20. The flat cylinder 40 is slidably mounted on the threaded rod 20 and is located between the first cutter head 10 and the second cutter head 30. The threaded cylinder 50 is threadedly connected to the threaded rod 20 and is located on both sides of the flat cylinder 40 along the axial direction of the flat cylinder 40. The flat cylinder 40 is clamped between the threaded cylinders 50 on both sides.

[0042] In the disclosed embodiment, a threaded rod 20, a first cutter head 10, a second cutter head 30, a flat cylinder 40 and a threaded cylinder 50 are also included. One end of the threaded rod 20 is detachably mounted on the first cutter head for supporting and mounting the second cutter head. The second cutter head 30 is detachably mounted on the other end of the threaded rod 20 for propping open the slit bones of the human body. The flat cylinder 40 is slidably mounted on the threaded rod 20 and is located between the first cutter head 10 and the second cutter head 30 for gripping so as to pry open the slit cervical vertebral plates. The threaded cylinder 50 is threadedly connected to the threaded rod 20 and is located on both sides of the flat cylinder 40 along the axial direction of the flat cylinder 40. The threaded cylinders 50 on both sides are used to clamp the flat cylinder 40.

[0043] During use, one of the two threaded barrels 50 is rotated, and the position of the flat barrel 40 relative to the threaded rod 20 can be changed through the interaction between the threads, so that the flat barrel 40 is separated from the threaded barrel 50. Then, the flat barrel 40 can slide relative to the threaded rod 20, so that the position of the flat barrel 40 relative to the threaded rod 20 can be changed. Subsequently, the other of the two threaded barrels 50 is rotated, and the position of the flat barrel 40 relative to the threaded rod 20 can be changed through the interaction between the threads. Until the flat barrel 40 is clamped between the threaded barrels 50 on both sides again, the relative position of the flat barrel 40 and the threaded rod 20 is fixed. Finally, the position of the flat barrel 40 relative to the first cutter head 10 and the second cutter head 30 can be changed, so that the doctor can hold the flat barrel 40 to perform surgery on different depths of the human body. At the same time. The threaded rod 20, the first cutter head 10, the second cutter head 30, the flat barrel 40 and the threaded barrel 50 can be disassembled, so that each component can be thoroughly disinfected and cleaned. Therefore, it is convenient for doctors to operate during surgery and disinfect after surgery.

[0044] Optionally, combined Figures 1 to 3 As shown, the threaded rod 20 includes a first round rod portion 21 and a second round rod portion 22. The first round rod portion 21 includes a first external thread located on its side, and the threaded barrels 50 on both sides are threadedly connected to the first external thread. The second round rod portion 22 is respectively connected to both ends of the first round rod portion 21, and the second round rod portions 22 at both ends include a second external thread located on their side. The center line of the first round rod portion 21 coincides with the center lines of the second round rod portions 22 on both sides.

[0045] In the disclosed embodiment, the threaded rod 20 includes a first round rod portion 21 and a second round rod portion 22 connected to both ends of the first round rod portion 21. The first round rod portion 21 is threadedly connected to the threaded barrels 50 on both sides through the first external thread on its side surface. The threaded connection has the advantages of stable connection and easy adjustment.

[0046] Optionally, combined Figure 1 and Figure 2 As shown, the first main body 11 includes a first threaded hole located on its end surface, wherein the first threaded hole is threadedly connected to one of the second external threads on both sides.

[0047] In the disclosed embodiment, the first main body 11 includes a first threaded hole on its end surface. The first threaded hole is used to be threadedly connected to one of the second external threads on both sides, so that the entire first cutter head 10 can be detachably mounted on the threaded rod 20. In addition, the threaded connection has the advantages of stable connection and easy disassembly.

[0048] Optionally, combined Figure 1 , Figure 3 and Figure 4As shown, the second cutter head 30 includes a second main body portion 31 and a second flat portion 32. The second main body portion 31 is threadedly connected to the other of the second external threads on both sides. The second flat portion 32 is connected to one end of the second main body portion 31.

[0049] In the disclosed embodiment, the second cutter head 30 includes a second main body portion 31 and a second flat portion 32. The second main body portion 31 is threadedly connected to the other of the second external threads on both sides so that the entire second cutter head 30 can be detachably mounted on the threaded rod 20. The second flat portion 32 is connected to one end of the second main body portion 31 and is used to be inserted into the bone to be cut. During use, the second flat portion 32 can be used to facilitate the insertion of the second cutter head 30 into the bone to be cut. After the second cutter head 30 enters the bone seam, it can be pried open by bending it, so as to perform subsequent operations.

[0050] Optionally, combined Figure 1 and Figure 3 As shown, the second main body 31 includes a second threaded hole at the other end thereof, wherein the second threaded hole is threadedly connected to the other of the second external threads on both sides.

[0051] In the disclosed embodiment, the second main body 31 includes a second threaded hole at the other end thereof. The second threaded hole is used to be threadedly connected with the other of the second external threads on both sides, so that the entire second cutter head 30 can be detachably mounted on the threaded rod 20. In addition, the threaded connection has the advantages of stable connection and easy disassembly.

[0052] Optionally, combined Figure 1 As shown, the flat cylinder 40 includes conical grooves at both ends thereof. The threaded cylinders 50 on both sides each include conical protrusions on their end faces, and the shape and size of the conical protrusions at both ends match the shape and size of the conical grooves at both sides. When the flat cylinder 40 is clamped between the threaded cylinders 50 on both sides, the conical protrusions on both sides are located inside the conical grooves at both ends.

[0053] In the disclosed embodiment, the flat cylinder 40 includes conical grooves at both ends thereof, and the threaded cylinders 50 on both sides each include conical protrusions on their end faces whose shapes and sizes match the conical grooves on both sides. During use, when the flat cylinder 40 is clamped between the threaded cylinders 50 on both sides, the conical protrusions on both sides can be engaged with the inside of the conical grooves at both ends, thereby positioning the flat cylinder 40 centripetally. This allows the center line of the flat cylinder 40 to coincide with the center line of the threaded rod 20, so as to facilitate holding and manipulation during surgery.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A surgical knife, characterized in that: include: A first blade head, the first blade head comprising a first main body, a first flat portion and a convex portion, one end of the first flat portion is connected to the first main body, the convex portion is connected to the first flat portion, and along the thickness direction of the first flat portion, the convex portions are located on both sides of the first flat portion; The distance between the other end of the first flat portion and the protruding portions on both sides ranges from 3.5 to 4 mm, and the protruding height of the protruding portions on each side ranges from 1.5 to 2 mm.

2. A surgical knife according to claim 1, characterized in that: The width of the other end of the first flat portion ranges from 5 to 6 mm.

3. A surgical knife according to claim 1, characterized in that: The thickness of the other end of the first flat portion ranges from 0.5 mm to 1 mm.

4. A surgical knife according to claim 1, characterized in that: Also includes: A threaded rod, one end of which is detachably mounted on the first cutting head; A second cutter head is detachably mounted on the other end of the threaded rod; A flat cylinder, slidably mounted on the threaded rod and located between the first cutting head and the second cutting head; A threaded cylinder, threadedly connected to the threaded rod, and located on both sides of the flat cylinder along the axial direction of the flat cylinder; Wherein, the flat cylinder is clamped between the threaded cylinders on both sides.

5. A surgical knife according to claim 4, characterized in that: The threaded rod comprises: A first round rod portion, the first round rod portion comprising a first external thread located on a side thereof, and the threaded barrels on both sides are threadedly connected to the first external thread; A second round rod portion, connected to two ends of the first round rod portion respectively, and the second round rod portions at both ends include a second external thread located on the side surface thereof; Wherein, the center line of the first round rod portion coincides with the center lines of the second round rod portions on both sides.

6. A surgical knife according to claim 5, characterized in that: The first main body portion includes a first threaded hole located on an end surface thereof; Wherein, the first threaded hole is threadedly connected to one of the second external threads on both sides.

7. A surgical knife according to claim 5, characterized in that: The second cutter head comprises: A second main body portion, threadedly connected to the other of the second external threads on both sides; The second flat portion is connected to one end of the second main body portion.

8. A surgical knife according to claim 7, characterized in that: The second body portion includes a second threaded hole at the other end thereof; Wherein, the second threaded hole is threadably connected to the other one of the second external threads on both sides.

9. A surgical knife according to claim 4, characterized in that: The flat cylinder includes conical grooves at both ends thereof; The threaded barrels on both sides include conical protrusions on their end faces, and the shape and size of the conical protrusions at both ends match the shape and size of the conical grooves on both sides; Wherein, when the flat cylinder is clamped between the threaded cylinders on both sides, the conical protrusions on both sides are located inside the conical grooves at both ends.

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