CN215458288U - Ergonomic anterior cervical surgery retractor capable of reducing injury risk - Google Patents
Ergonomic anterior cervical surgery retractor capable of reducing injury risk Download PDFInfo
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- CN215458288U CN215458288U CN202121634591.XU CN202121634591U CN215458288U CN 215458288 U CN215458288 U CN 215458288U CN 202121634591 U CN202121634591 U CN 202121634591U CN 215458288 U CN215458288 U CN 215458288U
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Abstract
The utility model relates to an ergonomic anterior cervical surgical retractor capable of reducing injury risk, which is in an S shape in overall side view and comprises a head part, a waist part, a handle part and a tail part; the inner side surface of the head part is designed into a concavo-convex gentle wave shape, the two sides of the head part are designed into thickened outward arcs, and the top end of the front part of the head part is of an arc-shaped, linear or reverse arc-shaped thickened groove-shaped structure; an oval through hole is further formed in the middle of the head part and close to the top end; the waist part is of an arc-shaped structure and is in natural transition connection with the head part and the handle part; the handle part is of an arc-shaped columnar structure; the tail part is of an arc hook-shaped structure, and the front end of the tail part is naturally and transitionally connected with the tail end of the handle part. Its advantages are: simple operation, good safety, effective retraction protection of the tracheoesophageal, the holding part conforming to the human engineering structure, and the application to special segments.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an ergonomic anterior cervical surgery retractor capable of reducing injury risks.
Background
The anterior cervical operation is a common operation for treating cervical vertebra diseases. Anterior cervical surgical access is achieved by cutting the skin, platysma muscles of the neck through a transverse or longitudinal incision in the right side of the neck, entering through the space between the vascular sheath and the visceral sheath. In operation, the trachea, the esophagus and other soft tissues need to be pulled to the left side by a draw hook so as to expose the cervical vertebra structure positioned on the midline of the human body. The esophagus is a soft organ mainly containing muscle tissues; the trachea is relatively fixed and has poor ductility, so the trachea and the esophagus tend to return to normal anatomical positions, and the trachea and the esophagus are usually pulled by a draw hook in anterior cervical surgery to be fixed outside the operative field, so the trachea and the esophagus are prevented from entering the operative operation area. Once entering the operative field, these structures can affect the visual field of the doctor and may accidentally injure the tracheal wall and esophageal wall, resulting in tracheal fistula and esophageal fistula. Tracheal fistula and esophageal fistula are one of the most serious complications of anterior cervical surgery, and can cause infection of incisions, lungs and mediastinum, and death of serious patients. The simplest and most effective way to prevent such surgical complications is to enhance intraoperative protection. Currently, there are 3 types of anterior cervical retractor in clinical use: an S-shaped drag hook, a thyroid drag hook and a blade type automatic drag hook. The standard S-shaped retractor is widely applied in China, the side surface of the S-shaped retractor is in an S shape transversely arranged, one end of the S-shaped retractor is bent to be convenient to hold by a hand, the other end of the S-shaped retractor is in a flat-head plate-shaped structure with the width of about 3cm, the S-shaped retractor is used for containing soft tissue structures such as esophagus, trachea and the like to carry out traction, and the head end of the S-shaped retractor is pressed against the surface of a vertebral body to prevent the soft tissue such as esophagus, trachea and the like from leaking from the lower part and entering the operative field to cause accidental injury. Although "S" shaped drag hooks are currently in wide clinical use, their design has some significant disadvantages: (1) the S-shaped drag hook holding part is flat plate-shaped, does not conform to the characteristics of hand ergonomics, can cause the hand of an operation assistant to be fatigued quickly and uncomfortable to ache and numb after being held for a long time, so that the attention of the operation assistant is dispersed, the force applied by the hand is easy to fluctuate, and the risk of esophagus injury caused by pressing the esophagus part below the lower edge of the S-shaped drag hook due to error is increased. (2) The head end of the S-shaped drag hook is straight without radian, and can only be used for patients with straight cervical vertebra, both sides of the head end can be completely contacted with the front of the vertebral body, the front of the cervical vertebra with light degeneration is an arc protruding to the front, the physiological curvature of the cervical vertebra with heavy degeneration disappears or the front of the cervical vertebra is a reverse arch arc protruding to the rear. When the head end of the retractor is pressed against the front of the vertebral body, the two sides or the middle part of the head end of the retractor often cannot be completely contacted with the front of the vertebral body, so that the soft tissues such as the esophagus and the like at the two sides or the middle part of the retractor are easy to leak from the position, and the accidental injury caused by the situation is generated clinically. The blade type automatic retractor also has the defects of insufficient width, soft tissue leakage, difficult grasping of the pulling force and the like, and meanwhile, the blade type retractor is complex to assemble and place and is not as flexible as an S-shaped retractor in position adjustment, thereby influencing the efficiency of the operation. Many skin incisions of clinical operation are little, and deep exposure scope is big, and when exposing the upper and lower end segment of incision, special subsection such as neck 1, neck 2, neck 7, the skin incision can restrict the direction of "S" shape drag hook. In the segments, in order to retract deep tissues, the S-shaped retractor can only rigidly retract the tracheoesophageal tract by the sharp corner of the head, cannot conform to the shape of the trachea and the esophagus by the arc part, and is easy to cause injury.
Chinese patent documents: CN201821525252.6, application date 2018.09.18, patent names: an improved cervical vertebra anterior comfortable retractor. Discloses an improved cervical vertebra anterior comfortable retractor, which comprises a head part, a handle and a tail part; the head part, the handle and the tail part are sequentially connected into a whole to form an S-shaped structure; the front section of the head part is of a gradually-adducted structure, and a small semicircular structure is arranged at the inner edge of the top end; the front end of the handle is connected with the head, the main body is of an oval structure, and the tail end is connected with the tail.
Chinese patent documents: CN201610664135.7, application date 2016.08.12, patent names: a novel retractor for anterior cervical vertebra surgery. Discloses a novel anterior cervical surgery retractor, which comprises a hook head and a pull rod, wherein the hook head is flat, one end of the hook head is vertically connected with one end of the pull rod, and the hook head is used for retracting soft tissues such as blood vessels, trachea, esophagus and the like of a patient in surgery; the front end of the hook head is provided with a baffle piece facing the pull rod side, and the width of the baffle piece is consistent with that of the hook head.
In the patent document CN201821525252.6, an improved cervical anterior comfortable retractor adopts a gradually-inward-contracting structure at the front section of the head, a small semicircular structure is arranged at the inner edge of the top end, the front end of the handle is connected with the head, and the main body is of an elliptical structure, so that the retractor conforms to ergonomics, is comfortable to use and uniform in tension, and can smoothly hook the outer side edge of the esophagus and the inner side edge of the longissimus cervicales in anterior cervical surgery, so as to avoid extrusion and traction injury to the esophageal wall in the traction process and avoid excessive traction and sympathetic nerve chain compression, thereby effectively protecting the visceral sheath and avoiding the occurrence of hodner syndrome, and relieving the pain of a patient; and a novel anterior cervical surgery retractor in patent document CN201610664135.7, then adopt the gib head to be the platykurtic, and the one end of gib head is connected with the one end of pull rod perpendicularly, and this retractor accords with the anatomical characteristics of national people's neck, and the laminating that not only can be better can effectively protect important tissue again in cervical vertebra centrum and intervertebral disc top, and the assistant of being convenient for in the operation is held, is difficult for sliding, and for the high price of automatic retractor, its lower cost more does benefit to popularizing. However, the retractor disclosed in the above patent documents also has problems that the width of the retractor is insufficient for tissues such as the esophagus, soft tissues are easily leaked, and the structure of the retractor portion is not able to conform to the shape of the trachea or the esophagus, and thus the retractor portion is easily damaged.
In summary, there is a need for an ergonomic anterior cervical surgical retractor with simple operation, good safety, effective retraction protection of the tracheoesophageal, ergonomic grip, and suitability for special segments that can reduce the risk of injury. There is no report on the drag hook.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the ergonomic anterior cervical operation retractor which is simple and convenient to operate, good in safety, capable of effectively retracting and protecting the tracheoesophageal, has a holding part conforming to the ergonomic structure, and is suitable for special segments and capable of reducing the injury risk.
In order to achieve the purpose, the utility model adopts the technical scheme that:
an ergonomic anterior cervical surgical retractor capable of reducing injury risks is provided, and the ergonomic anterior cervical surgical retractor capable of reducing injury risks is S-shaped in overall side view and comprises a head, a waist, a handle and a tail; the inner side surface of the head part is designed into a concavo-convex gentle wave shape, the two sides of the head part are designed into thickened outward arcs, and the top end of the front part of the head part is of an arc-shaped, linear or reverse arc-shaped thickened groove-shaped structure; an oval through hole is further formed in the middle of the head part and close to the top end; the waist part is of an arc-shaped structure and is in natural transition connection with the head part and the handle part; the handle part is of an arc-shaped columnar structure; the tail part is of an arc hook-shaped structure, and the front end of the tail part is naturally and transitionally connected with the tail end of the handle part.
As a preferable technical scheme, one end of the head part is outwards extended and protruded and is in a 'b' shape or a reverse 'b' shape structure.
As a preferable technical scheme, the length of the straight line at the head end and the tail end is 20-30cm, and the height is 6-10 cm.
As a preferable technical scheme, the head part is 2-8cm wide, 2-4cm high and 0.5-1mm thick, thickened parts on two sides of the head part and thickened groove parts at the front end of the head part are 1-2mm thick, the oval through hole in the middle of the head part is 3-6mm long, and the widest part is 1-2mm wide.
As a preferred technical scheme, the highest point of the arc-shaped part of the waist part is 2-6cm high; the diameter of the arc-shaped cylinder of the handle part is 2-4 cm; the radius of a large circular arc formed by the head and the waist is 2-6 cm.
As a preferable technical scheme, the radius of a small arc formed by the hook-shaped structure of the tail part is 1-3 cm.
As a preferable technical scheme, the draw hook is made of medical stainless steel.
The utility model has the advantages that:
1. the middle of the head part is provided with the oval through hole close to the top end, so that the esophagus behind the drag hook can be seen directly in the operation conveniently, no part of the esophagus is pressed under the drag hook, and the esophagus is prevented from being damaged.
2. Head medial surface is unsmooth gentle wave form, and the head both sides are the outside arc design of bodiness, and the area of contact of multiplicable head and esophagus trachea reduces local tractive stress, reduces the degree that causes esophagus trachea mucosa damage edema because of long-time tractive in the art, and then reduces the postoperative patient and appear the degree that throat is painful, foreign body sensation, swallowing discomfort etc..
3. The top end of the front part of the head is thickened in an arc shape, a straight line shape or a reverse arc shape, so that the head-front-end-thickened retractor can be suitable for patients with cervical vertebra physiological anteflexion, physiological anteflexion disappearance or reverse bow and the like, the front end of the head can be well attached to the front edge of the cervical vertebra of the patient, and the esophagus can be contained in the thickened groove-shaped structure through the thickening of the front end of the head, so that the esophagus is prevented from leaking from the lower part of the retractor, and the injury risk is increased.
4. The handle is designed to be of an arc-shaped columnar structure, the structure of the handle accords with the ergonomic anatomical characteristics of hands, the handle is convenient to hold, the hand exerts force uniformly, and the handle is not easy to fatigue.
5. One end of the head extends outwards and protrudes, is in a 'b' shape and a reverse 'b' shape, and is respectively suitable for being used when an upper cervical vertebra structure (such as a neck 1 and a neck 2) needs to be exposed in a sneak way and a lower cervical vertebra structure and an upper thoracic vertebra structure (such as a neck 7 and a chest 1) need to be exposed in a sneak way.
Drawings
Fig. 1 is a schematic perspective view of an ergonomic anterior cervical surgical retractor for reducing the risk of injury according to embodiment 1 of the present invention.
Fig. 2 is a front view of the ergonomic anterior cervical surgical retractor of example 1 of the present invention to reduce the risk of injury.
Fig. 3 is a bottom view of the head of the surgical retractor of the present invention, wherein a is a bottom view of the head of the surgical retractor of example 1, B is a bottom view of the head of the surgical retractor of example 2, and C is a bottom view of the head of the surgical retractor of example 3.
Fig. 4 is a front view of the head of the surgical retractor of the present invention, wherein a is a front view of the head of the surgical retractor of example 1, B is a front view of the head of the surgical retractor of example 2, and C is a front view of the head of the surgical retractor of example 3.
Fig. 5 is a schematic view of the top end structure of the head of the surgical retractor according to the present invention, wherein a is a schematic view of the top end structure of the head of the surgical retractor in example 1, B is a schematic view of the top end structure of the head of the surgical retractor in example 2, and C is a schematic view of the top end structure of the head of the surgical retractor in example 3.
Detailed Description
The utility model is further described with reference to the following examples and with reference to the accompanying drawings.
The reference numerals and components referred to in the drawings are as follows:
1. head 11, through hole
12. Groove-shaped 2. waist part
3. Handle 4. tail part
Example 1
Referring to fig. 1-2, fig. 1 is a schematic perspective view of an ergonomic anterior cervical surgical retractor for reducing a risk of injury according to the present invention, and fig. 2 is a front view of the ergonomic anterior cervical surgical retractor for reducing a risk of injury according to the present invention. The ergonomic anterior cervical operation retractor capable of reducing the injury risk is S-shaped in overall side view and comprises a head part 1, a waist part 2, a handle part 3 and a tail part 4, and the corners are in arc natural transition; the inner side surface of the head part 1 is in a concave-convex gentle wave-shaped design, the two sides of the head part 1 are in thickened outward arc-shaped designs, and the top end of the front part of the head part 1 is in an arc-shaped thickened groove-shaped 12 design; an oval through hole 11 is further formed in the middle of the head part 1 close to the top end; the width of the waist part 2 is the same as that of the head part 1, the waist part 2 is of an arc structure and is in integral natural transition connection with the head part 1 and the handle part 3; the handle part 3 is of an arc-shaped columnar structure; the tail part 4 is of an arc hook-shaped structure, and the front end of the tail part 4 is in integral natural transition connection with the tail end of the handle part 3.
It should be noted that: the surgical retractor is made of medical stainless steel and can be sterilized at high temperature and high pressure for repeated use; the length of the straight line at the head end and the tail end is 20-30cm, preferably 20cm, and the height is 6-10cm, preferably 6 cm; the width of the head part 1 is 2-8cm, preferably 2mm, the height is 2-4cm, preferably 2mm, the thickness is 0.5-1mm, preferably 1mm, the thickness of the thickened parts at two sides of the head part 1 and the thickened groove 12 at the front end of the head part 1 is 1-2mm, preferably 1mm, the length of the oval through hole 11 in the middle of the head part 1 is 3-6mm, preferably 3mm, and the width of the widest part is 1-2mm, preferably 2 mm; the highest point of the arc-shaped part of the waist part 2 is 2-6cm, preferably 4 cm; the diameter of the arc-shaped cylinder of the handle 3 is 2-4cm, preferably 3 m; the radius of a large arc formed by the head part 1 and the waist part 2 is 2-6cm, preferably 5cm, and the radius of a small arc formed by the hook-shaped structure of the tail part 4 is 1-3cm, preferably 2 cm; the middle of the head part 1 is provided with the oval through hole 11 close to the top end, so that the esophagus behind the drag hook can be seen directly in the operation, no part of the esophagus is pressed under the drag hook, and the esophagus is prevented from being damaged; the inner side surface of the head part 1 is in a concavo-convex gentle wave shape, and the two sides of the head part 1 are in thickened outward arc design, so that the contact area of the head part 1 and an esophagus trachea can be increased, the local traction stress is reduced, the degree of injury and edema of the esophagus trachea mucosa caused by long-time traction in the operation is reduced, and further the degree of throat pain, foreign body sensation, swallowing discomfort and the like of a postoperative patient is reduced; the top end of the front part of the head part 1 is designed into an arc thickened groove-shaped 12, so that the front end of the head part 1 can be well attached to the front edge of the cervical vertebra of a patient when the cervical vertebra is physiologically anteverted, and the esophagus can be contained in the groove-shaped 12, so that the esophagus is prevented from leaking from the lower part of the drag hook, and the injury risk is increased; the handle part 3 is designed to be of an arc-shaped columnar structure, the structure of the handle part accords with the ergonomic anatomical characteristics of hands, the handle part is beneficial to holding, the hands exert force uniformly, and the handle part is not easy to fatigue.
Example 2
Referring to fig. 3-5, fig. 3 is a bottom view of the head of the surgical retractor of the present invention, fig. 4 is a front view of the head of the surgical retractor of the present invention, and fig. 5 is a top end view of the head of the surgical retractor of the present invention. This embodiment is substantially the same as embodiment 1 except that the head 1 in this embodiment has an outwardly extending protrusion at one end in the shape of an inverted "B" (see B in fig. 3-4), and the head 1 has a front tip 13 in the shape of an inverted arc thickened groove 12 (see B in fig. 5); the length of the straight line at the head end and the tail end is 25cm, and the height is 7 cm; the width of the head part 1 is 5cm, the height of the head part is 4cm, the thickness of the head part is 0.8mm, the thickness of thickened parts on two sides of the head part 1 and the thickness of a thickened groove 12 at the front end of the head part are 2mm, the length of an oval through hole 11 in the middle of the head part 1 is 6mm, and the width of the widest part is 1.5 mm; the highest point of the arc-shaped part of the waist part 2 is 5 cm; the diameter of the arc-shaped cylinder of the handle part 3 is 4 cm; the radius of a large arc formed by the head part 1 and the waist part 2 is 6cm, and the radius of a small arc formed by the hook-shaped structure of the tail part 4 is 3 cm; in the embodiment, one end of the head part 1 extends outwards and protrudes, and is designed in a reverse 'b' shape, so that the contact area with the esophagus and trachea can be increased, the local traction stress is reduced, and the head part is suitable for being used when lower cervical vertebra and upper thoracic vertebra structures (such as neck 1 and chest 1) need to be exposed in a submerged manner; and 1 anterior top 13 of head is the design of reverse arc thickening slot form 12, is applicable to the patient of the reverse bow of cervical vertebra physiology, can make 1 front end of head and patient's cervical vertebra leading edge well attached, and can accomodate the esophagus wherein through slot form 12, prevents that the esophagus from spilling from the drag hook below, increases the damage risk.
Example 3
Referring to fig. 3-5, fig. 3 is a bottom view of the head of the surgical retractor of the present invention, fig. 4 is a front view of the head of the surgical retractor of the present invention, and fig. 5 is a top end view of the head of the surgical retractor of the present invention. This embodiment is substantially the same as embodiment 1, except that the head 1 in this embodiment has one end extending and protruding outward, and is in the shape of "b" (see C in fig. 3-4), and the top end of the front part of the head 1 is in the design of a straight thickened groove-shaped groove 12 (see C in fig. 5); the length of the straight line at the head end and the tail end is 25cm, and the height is 7 cm; the width of the head part 1 is 4cm, the height of the head part is 4cm, the thickness of the head part is 1mm, the thickness of thickened parts on two sides of the head part 1 and the thickness of a thickened groove 12 at the front end of the head part are 2mm, the length of an oval through hole 11 in the middle of the head part 1 is 5mm, and the width of the widest part is 2 mm; the highest point of the arc-shaped part of the waist part 2 is 5 cm; the diameter of the arc-shaped cylinder of the handle part 3 is 2 cm; the radius of a large arc formed by the head part 1 and the waist part 2 is 6cm, and the radius of a small arc formed by the hook-shaped structure of the tail part 4 is 3 cm; in the embodiment, one end of the head part 1 extends outwards and protrudes, and is in a 'b' -shaped design, so that the contact area with the esophagus and trachea can be increased, the local traction stress is reduced, and the head part is suitable for being used when the upper cervical vertebra structures (such as the neck 1 and the neck 2) need to be exposed in a submerged manner; and the design that head 1 anterior top is sharp thickening ditch groove form 12, is applicable to the patient that cervical vertebra physiology anteflexion disappears, can make head 1 front end and patient's cervical vertebra leading edge well attached, and can accomodate wherein the esophagus through ditch groove form 12, prevents that the esophagus from spilling from the drag hook below, increases the injury risk.
The utility model discloses a use method of an ergonomic anterior cervical vertebra surgical retractor capable of reducing injury risks, which comprises the following steps: firstly, determining an operation incision according to the projection of different cervical vertebra segments on the body surface of the neck. Incise the skin, subcutaneous tissue and platysma, separate soft tissue between the vascular sheath and visceral sheath, and use fingers to blunt separate fascia between the vascular sheath and visceral sheath to touch the fascia in front of the vertebral body when the boundary is clear and the exposed range is sufficient. At the moment, the draw hooks of different models are selected according to the operation requirement, the draw hooks slide into the separated gaps by a rotating method, the trachea, the esophagus and the surrounding soft tissues are integrally contained in the arc-shaped structure of the draw hooks, and the head ends are appropriately buckled and lifted. One assistant holds the handle of the retractor with a hand to draw the retractor with a slight upward force, so that the trachea and the esophagus are pulled to the opposite side to expose part of the cervical longus muscle on the opposite side, and the other assistant uses a thyroid retractor to pull the vascular sheath and the surrounding soft tissues to the other side to expose the structures of the front face of the vertebral body, the anterior fascia of the vertebral body, the cervical longus muscle and the like. When the upper cervical vertebra structures (such as the neck 1 and the neck 2) need to be exposed in a submerged way, the head reverse B-shaped drag hook can be used, and when the lower cervical vertebra structures and the upper thoracic vertebra structures (such as the neck 7 and the chest 1) need to be exposed in a submerged way, the head B-shaped drag hook can be used. The surgical segment can generally use a retractor of the conventional head type. Then, the steps of intervertebral space decompression, interbody fusion, secondary corpectomy, interbody bone grafting, centrum titanium plate screw fixation and the like can be performed according to a common method.
According to the ergonomic anterior cervical surgery retractor capable of reducing the injury risk, the oval through hole is formed in the middle of the head part and close to the top end, so that the esophagus behind the retractor can be seen directly in the surgery, no part of the esophagus is pressed below the retractor, and the esophagus is prevented from being injured; the inner side surface of the head is in a concave-convex gentle wave shape, and the two sides of the head are in thickened outward arc shapes, so that the contact area between the head and the esophageal trachea can be increased, the local traction stress is reduced, the degree of injury and edema of the esophageal and tracheal mucosa caused by long-time traction in the operation is reduced, and the degree of throat pain, foreign body sensation, swallowing discomfort and the like of a patient after the operation is further reduced; the top end of the front part of the head is thickened in an arc shape, a straight line shape or a reverse arc shape, so that the head-side thickening retractor is suitable for patients with cervical vertebra physiological anteflexion, physiological anteflexion disappearance or reverse bow and the like, the front end of the head can be well attached to the front edge of the cervical vertebra of the patient, and the esophagus can be contained in the thickened groove structure through the thickening groove structure of the front end of the head, so that the esophagus is prevented from leaking from the lower part of the retractor, and the injury risk is increased; the handle is designed into an arc-shaped columnar structure, the structure of the handle accords with the ergonomic anatomical characteristics of hands, the handle is convenient to hold, the hand exerts force uniformly, and the handle is not easy to fatigue; one end of the head extends outwards and protrudes, is in a 'b' shape and a reverse 'b' shape, and is respectively suitable for being used when an upper cervical vertebra structure (such as a neck 1 and a neck 2) needs to be exposed in a sneak way and a lower cervical vertebra structure and an upper thoracic vertebra structure (such as a neck 7 and a chest 1) need to be exposed in a sneak way.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (7)
1. An ergonomic anterior cervical surgical retractor capable of reducing injury risk is characterized in that the ergonomic anterior cervical surgical retractor capable of reducing injury risk is S-shaped in overall side view and comprises a head, a waist, a handle and a tail; the inner side surface of the head part is designed into a concavo-convex gentle wave shape, the two sides of the head part are designed into thickened outward arcs, and the top end of the front part of the head part is of an arc-shaped, linear or reverse arc-shaped thickened groove-shaped structure; an oval through hole is further formed in the middle of the head part and close to the top end; the waist part is of an arc-shaped structure and is in natural transition connection with the head part and the handle part; the handle part is of an arc-shaped columnar structure; the tail part is of an arc hook-shaped structure, and the front end of the tail part is naturally and transitionally connected with the tail end of the handle part.
2. The ergonomic anterior cervical surgical retractor according to claim 1, wherein the head portion has an outwardly extending protrusion at one end thereof, and is configured to be "b" shaped or inverted "b" shaped.
3. The ergonomic anterior cervical surgical retractor according to claim 1, wherein the straight line at the head and tail ends has a length of 20-30cm and a height of 6-10 cm.
4. The ergonomic anterior cervical surgical retractor according to claim 1, wherein the head has a width of 2-8cm, a height of 2-4cm and a thickness of 0.5-1mm, the thickened parts of the two sides of the head and the thickened groove part of the front end of the head have a thickness of 1-2mm, the oval through hole in the middle of the head has a length of 3-6mm, and the widest part has a width of 1-2 mm.
5. The ergonomic anterior cervical surgical retractor according to claim 1, wherein the height of the highest point of the curved waist portion is 2-6 cm; the diameter of the arc-shaped cylinder of the handle part is 2-4 cm; the radius of a large circular arc formed by the head and the waist is 2-6 cm.
6. An ergonomic anterior cervical surgical retractor according to claim 1, wherein the hook-shaped tail portion has a radius of a small arc of 1-3 cm.
7. The ergonomic anterior cervical surgical retractor of claim 1 wherein the retractor is made of medical grade stainless steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114533150A (en) * | 2022-01-20 | 2022-05-27 | 南通市肿瘤医院 | Bilateral anti-drop nondestructive tracheal retractor |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114533150A (en) * | 2022-01-20 | 2022-05-27 | 南通市肿瘤医院 | Bilateral anti-drop nondestructive tracheal retractor |
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