CN209595806U - A kind of head retractor for the operation of cranial nerve section - Google Patents

Abstract

The utility model provides a kind of head retractor for the operation of cranial nerve section, the first head hoop and the second head hoop, connection bolt and traction pawl including arc, first head hoop and the second head hoop pass through the connection being arranged from top to bottom and are bolted together to form ring support, ring support is equipped with pawl platform, fixed station, card slot is equipped in fixed station, along two traction ropes are disposed on ring support, the one end for retracting rope is connect with pawl is retracted, and the other end for retracting rope is movably nested within card slot；Using the technical solution of the utility model, medical staff retracts pawl by retracting rope drawing, make traction action power always along ring support edge transfer, effectively prevent the accidental injury caused by human body head skin surface in operation, the utility model is of simple structure and low cost, surface corner angle are few, cause to damage to human body scalp when effectively preventing patient worn, easy to use.

Description

A kind of head retractor for the operation of cranial nerve section

Technical field

The utility model belongs to the field of medical instrument technology more particularly to a kind of head for the operation of cranial nerve section retracts Device.

Background technique

With the development of medical technology, nerve endoscope technology is postoperative to fully recover the advantages that fast since its wound is small, by increasingly More medical personnels is in the operative treatments of brain diseases patient such as hydrocephalus, intracranial Arachnoid Cyst, patient to receive brain When portion performs the operation, skin at the brain crucial incision by patient is needed, certain operation and observation space are reserved to operator, Facilitate scope sheath to enter at cerebral lesion simultaneously to be operated.In the prior art, common brain retractor is snakelike retractor, It can be by the skin retractor at patient's brain crucial incision, but the usual drag hook position of existing snakelike retractor cannot be consolidated It is fixed, usually since the loosening of drag hook position causes the folding of incision skin to change, influence patient's operation.Meanwhile it is existing Drag hook when in use, user's force direction is often more casual, be easy patient wound skin is caused to damage, for example, Publication No.: the patent document of " CN206120374U " discloses a kind of Automatic cerebral retractor, including bracket and drag hook, bracket Including four identical arc brackets, drag hook includes retractor head and the cylinder drag hook handle connecting with retractor head；On cylinder drag hook handle It is evenly arranged with card bead, is machined with the first groove on the outside of each arc bracket, be machined with inside arc bracket and described the The second groove that one texturearunaperpendicular communicates uniformly is machined with multiple card holes, detent bore dia and the cylinder on the second groove The diameter of section of drag hook handle is identical；The cylinder drag hook handle has elasticity, can pass through the first groove and the under a stretching force Two grooves, and be stuck in card hole, using the technical solution of the utility model, solves and retractor drag hook position is consolidated Fixed problem, still, when in use, the direction that application acts on the active force on drag hook is still more casual, still by medical staff It is so easy that patient skin is caused to damage, and the apparatus surface corner angle are more, when being used for patients head, also be easy to patient's head Skin causes to damage.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of head retractor for the operation of cranial nerve section.

The utility model is achieved by the following technical programs.

The utility model provides a kind of head retractor for the operation of cranial nerve section, mainly includes the first head hoop, second Head hoop, connection bolt and traction pawl, first head hoop and the second head hoop are arc, and the both ends of first head hoop are equipped with Tongue-and-groove, the both ends of second head hoop are equipped with tenon, the connection bolt along direction from top to bottom sequentially pass through tenon with Tongue-and-groove makes first head hoop and the second head hoop connects into ring support, and first head hoop top surface is equipped with pawl platform, and described the Two head hoop top surfaces are equipped with fixed station, are equipped with card slot within the fixed station, two are disposed on the ring support and is led Rope is opened, described one end for retracting rope passes through pawl platform and links together with the traction pawl, and the other end for retracting rope is movable Ground is nested within the card slot.

First head hoop, the second head hoop cross section smooth, the outwardly projecting kidney ellipsoid in the left and right sides for upper and lower two sides.

The connection bolt top surface is equipped with guide groove, and the traction rope is movably sleeved within guide groove.

The traction pawl by corpus unguis and it is multiple be fixed on corpus unguis, curved pawl head forms.

The card slot cross section is the taper that outer end is small, inner end is big, and card slot outer end port bore is traction rope The half of diameter is to 3/4ths.

The pawl platform is symmetrically arranged at the top surface of first head hoop using the first head hoop central plane as mirror image face On.

The fixed station is symmetrically arranged at the top of second head hoop using the second head hoop central plane as mirror image face On face.

Multipair rolling bearing, each pair of rolling bearing outer circumference surface are also equipped on first head hoop, the second head hoop top surface Opposite to each other, the traction rope is movably sleeved within the gap between each pair of rolling bearing outer circumference surface.

Gap between each pair of rolling bearing outer circumference surface is connected in turn to form one and the annular branch The bearing that frame shape matches arranges track.

The traction rope has elasticity.

The utility model has the beneficial effects that: medical staff when in use, will using the technical solution of the utility model Claw hook is retracted to enter for retracting the skin of brain incision at brain week skin, for expanding the surgical field of view of medical staff's needs, Medical staff, which passes through, retracts rope drawing traction pawl, and traction rope, which can be caught in card slot, to be fixed, and rope is retracted when pulling, by card The guiding role of slot and rolling bearing makes the active force of medical staff always along ring support edge transfer, effectively prevents It is accidentally injured caused by human body head skin surface in operation, in addition, the utility model structure is simple, manufacturing cost is low Honest and clean, ring support surface corner angle are less, will not cause to damage to human body head skin, bolt connects according to top-down direction It connects, avoids contacting with human skin, further reduce the probability for causing damage to human skin.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the top view of the utility model；

Fig. 3 is the structural schematic diagram of the utility model connection bolt；

Fig. 4 is the structural schematic diagram that the utility model retracts pawl；

Fig. 5 is the top view that the utility model retracts pawl；

Fig. 6 is the structural schematic diagram of the first head hoop of the utility model；

Fig. 7 is the top view of the first head hoop of the utility model；

Fig. 8 is structural schematic diagram of the first head hoop of the utility model along central cross-section cutting；

Fig. 9 is the structural schematic diagram of the second head hoop of the utility model；

Figure 10 is the top view of the second head hoop of the utility model；

Figure 11 is structural schematic diagram of the second head hoop of the utility model along central cross-section cutting.

In figure: the first head hoop of 1-, the second head hoop of 2-, 3- connection bolt, 4- retract pawl, 5- ring support, and 6- retracts rope, 7- Rolling bearing, 101- tongue-and-groove, 102- pawl platform, 201- tenon, 202- fixed station, 203- card slot, 301- guide groove, 401- corpus unguis, 402- pawl head.

Specific embodiment

Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.

As shown in Figure 1 to 11, the utility model provides a kind of head retractor for the operation of cranial nerve section, including the One head hoop 1, the second head hoop 2, connection bolt 3 and traction pawl 4, the first head hoop 1 and the second head hoop 2 are arc, the first head hoop 1 Both ends be equipped with tongue-and-groove 101, the both ends of the second head hoop 2 are equipped with tenon 201, connect bolt 3 along direction from top to bottom successively The first head hoop 1 and the second head hoop 2 is set to connect into ring support 5 through tenon 201 and tongue-and-groove 101,1 top surface of the first head hoop is equipped with Pawl platform 102,2 top surface of the second head hoop are equipped with fixed station 202, card slot 203 are equipped within fixed station 202, along on ring support 5 Two traction ropes 6 are disposed with, the one end for retracting rope 6 passes through pawl platform 102 and links together with pawl 4 is retracted, and retracts the other end of rope 6 It is movably nested within card slot 203.

Using the technical solution of the utility model, medical staff when in use, traction claw hook is entered and is used at brain week skin The skin for retracting brain incision, for expanding the surgical field of view of medical staff's needs, medical staff is led by retracting rope It opens pawl, retracts rope and can be caught in card slot and is fixed, retract rope in drawing, by the guiding role of card slot and rolling bearing, Make the active force of medical staff always along ring support edge transfer, effectively prevents in operation to human body head skin Skin is accidentally injured caused by surface, in addition, the utility model structure is simple, manufacturing cost is cheap, and ring support surface corner angle are less, no Human body head skin can be caused to damage, bolt is connected according to top-down direction, avoids contacting with human skin, further Reduce the probability that damage is caused to human skin.

Further, the first head hoop 1,2 cross section of the second head hoop are that upper and lower two sides are smooth, the outwardly projecting waist in the left and right sides It is round.Using the technical solution of the utility model, reduces the outer surface corner angle of the first head hoop 1, the second head hoop 2, be conducive to subtract Few damage to human body head surface skin.

Further, connection 3 top surface of bolt is equipped with guide groove 301, retracts rope 6 and is movably sleeved on guide groove 301 Within.Using the technical solution of the utility model, by guide groove 301, make the active force acted on retract on rope 6 with determination Direction, and occupied space is less.

Further, retract pawl 4 by corpus unguis 401 and it is multiple be fixed on corpus unguis 401, curved pawl head 402 forms.

Further, 203 cross section of card slot is the taper that outer end is small, inner end is big, and 203 outer end port bore of card slot is to retract Restrict 6 diameters half to 3/4ths.Using the technical solution of the utility model, retracting rope 6 can be by being nested into card slot It is easily fixed within 203, medical staff is facilitated to act on the traction of brain incision skin.

Further, pawl platform 102 is symmetrically arranged at the top of the first head hoop 1 using 1 central plane of the first head hoop as mirror image face On face.

Further, fixed station 202 is symmetrically arranged at the second head hoop 2 by mirror image face of 2 central plane of the second head hoop On top surface.

Further, the first head hoop 1, be also equipped with multipair rolling bearing 7, each pair of rolling bearing 7 on 2 top surface of the second head hoop Outer circumference surface is relative to each other, retracts rope 6 and is movably sleeved within the gap between each pair of 7 outer circumference surface of rolling bearing.Into One step, the gap between each pair of 7 outer circumference surface of rolling bearing is connected in turn to form one and 5 shape phase of ring support Identical bearing arranges track.

Further, retracting rope 6 has elasticity.Using the technical solution of the utility model, when retracting rope has elasticity, just In the transmitting of active force, make medical staff that can easily will by retracting the flexible of rope without using biggish initial forces Brain incision skin retractor, it is convenient to operate.

Claims (8)

1. a kind of head retractor for the operation of cranial nerve section, it is characterised in that: including the first head hoop (1), the second head hoop (2), bolt (3) are connected and retract pawl (4), first head hoop (1) and the second head hoop (2) they are arc, and described first The both ends for binding round (1) are equipped with tongue-and-groove (101), and the both ends of second head hoop (2) are equipped with tenon (201), connection bolt (3) edge Direction from top to bottom sequentially pass through tenon (201) and tongue-and-groove (101) and make first head hoop (1) and the second head hoop (2) even It is connected into ring support (5), the first head hoop (1) top surface is equipped with pawl platform (102), and the second head hoop (2) top surface is equipped with Fixed station (202) is equipped with card slot (203) within the fixed station (202), is disposed with two on the ring support (5) Rope (6) is retracted, described one end for retracting rope (6) passes through pawl platform (102) and links together with the traction pawl (4), the traction The other end of rope (6) is movably nested within the card slot (203), and the traction pawl (4) is by corpus unguis (401) and multiple solid On corpus unguis (401), curved pawl head (402) composition, the traction rope (6) has elasticity.

2. the head retractor for the operation of cranial nerve section as described in claim 1, it is characterised in that: first head hoop (1), the second head hoop (2) cross section is that upper and lower two sides are smooth, the outwardly projecting kidney ellipsoid in the left and right sides.

3. the head retractor for the operation of cranial nerve section as claimed in claim 2, it is characterised in that: the connection bolt (3) top surface is equipped with guide groove (301), and the traction rope (6) is movably sleeved within guide groove (301).

4. the head retractor for the operation of cranial nerve section as described in claim 1, it is characterised in that: the card slot (203) Cross section is the taper that outer end is small, inner end is big, and card slot (203) the outer end port bore is the two of described traction rope (6) diameter 3/1 mono- to four.

5. the head retractor for the operation of cranial nerve section as described in claim 1, it is characterised in that: the pawl platform (102) It is symmetrically arranged on the top surface of first head hoop (1) using the first head hoop (1) central plane as mirror image face.

6. the head retractor for the operation of cranial nerve section as described in claim 1, it is characterised in that: the fixed station (202) it is symmetrically arranged on the top surface of second head hoop (2) using the second head hoop (2) central plane as mirror image face.

7. the head retractor for the operation of cranial nerve section as described in claim 1, it is characterised in that: first head hoop (1), it being also equipped with multipair rolling bearing (7) on the second head hoop (2) top surface, each pair of rolling bearing (7) outer circumference surface is relative to each other, The traction rope (6) is movably sleeved within the gap between each pair of rolling bearing (7) outer circumference surface.

8. the head retractor for the operation of cranial nerve section as claimed in claim 7, it is characterised in that: each pair of axis of rolling The gap between (7) outer circumference surface is held to be connected in turn to form the axis to match with the ring support (5) shape Hold arrangement track.