CN213372359U - Neural blocking needle convenient to adjust depth of inserting needle - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, a neural needle that hinders convenient to adjust the depth of needle insertion is disclosed, including needle point, needle handle and needle tail, be equipped with the locating part along its endwise slip on the needle handle, the locating part with be equipped with the mounting that is used for increase and needle handle frictional force on the position of needle handle contact. The utility model discloses can independently adjust the biggest needle depth of inserting of neural obstructed needle, avoid inserting the needle too deeply by accident.

Description

Neural blocking needle convenient to adjust depth of inserting needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to neural needle that blocks convenient to adjust the depth of inserting needle.

Background

With the continuous popularization and popularity of ultrasound application, more and more anesthetists choose to perform nerve block operation under ultrasound guidance. However, many anesthesiologists do not visualize the nerve block needle well or even completely in the ultrasound image due to unskilled procedures. The position of the nerve block needle needs to be adjusted continuously to make the nerve block needle be clearly developed. In the adjusting process, the patient is usually unconsciously inserted too deep (especially when the target point of the patient is deep) due to the fact that the patient is focused on searching the optimal position of the nerve block needle, and unnecessary tissue damage and even some serious complications (such as pneumothorax and the like) are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a neural needle that blocks convenient to adjust the depth of insertion aims at can independently adjusting the biggest depth of insertion of neural needle that blocks, avoids inserting the needle too deeply at accident.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a neural stagnation needle convenient to adjust needle insertion depth, includes needle point, needle handle and backshank, be equipped with the locating part along its endwise slip on the needle handle, the locating part with be equipped with the mounting that is used for the increase with needle handle frictional force on the position of needle handle contact.

The principle and the advantages of the scheme are as follows:

1) for the operation that the puncture target point is shallower than the surface, especially when the puncture target point is a bony structure (for example, the transverse process of a vertebral body serving as the puncture target point in the erector spinae muscle plane block is generally about 1.5-2 cm away from the skin), after the target point position is determined by ultrasonic scanning, a vertical needle feeding point can be marked on the surface of the body, and meanwhile, the length from a limiting part to the needle point is set according to the depth of the needle feeding point. At the moment, the needle is perpendicularly inserted from the mark point, even ultrasonic guidance is not needed, the reserved length of the nerve blocking needle can touch a target point (transverse process of a vertebral body), if the nerve blocking needle does not touch the target point, the needle insertion path is considered to be deviated, the needle needs to be repositioned for puncture, and the limiting part can determine the needle insertion depth in advance to play a limiting role, so that the structure that the pleura is punctured by the inadvertent needle insertion too deep can be effectively avoided.

2) For the operation of deeper puncture target points, ultrasonic scanning is also adopted to evaluate the depth of the target points, and the length from the limiting part to the needle point is set, so that the depth of the needle insertion is limited. At this time, because the maximum needle inserting depth is limited, even when the position of the puncture needle is required to be adjusted due to unclear ultrasonic development, unnecessary injury caused by carelessly inserting too deep needle by focusing on searching for a nerve block needle in an ultrasonic image is avoided.

3) According to the technical scheme, the fixing piece is arranged at the position where the limiting piece is in contact with the needle handle, so that medical staff can limit the maximum needle inserting depth by adjusting the position of the limiting piece before needle inserting, the needle inserting is prevented from being too deep, the friction force between the limiting piece and the needle handle can be increased by the fixing piece, the chance that the limiting piece falls off can be reduced, and smooth needle inserting is further ensured.

Preferably, as an improvement, a bracket for supporting the limiting member is arranged between the limiting member and the needle tail.

The support among this technical scheme can support the locating part, avoids appearing the circumstances that the locating part slided backward because of the atress when inserting the needle to limit the maximum depth of inserting the needle of nerve block.

Preferably, as an improvement, be equipped with two fixed blocks on the backshank, two the fixed block is located the both sides of needle handle respectively, the one end and the fixed block of support are connected, the other end of support is the free end, just the free end of support with the cooperation can be dismantled to the locating part.

The both ends of support cooperate with fixed block and leg joint respectively among this technical scheme, and because the cooperation can be dismantled with the locating part to the free end of support, in such a mode, can be convenient for change the position of locating part and change the degree of depth of inserting the needle after, realize the support again and the cooperation relation of being connected of locating part to play the effect of effective support to the locating part.

Preferably, as an improvement, a clamping plate is arranged on the end face, close to the needle tail, of the limiting part, a serrated clamping groove is formed in the clamping plate, and the free end of the support can be inserted into the clamping groove and abuts against the clamping groove.

So set up, after sliding the locating part to the position that corresponds on the needle body with the locating part in this technical scheme, through putting into the support between locating part and backshank, make the support both ends offset with draw-in groove and fixed block respectively to reach the purpose that supports the locating part, the setting of draw-in groove among this technical scheme can play spacing effect to the support in addition, and the in-process draw-in groove of inserting the needle can restrict the support and slide.

Preferably, as an improvement, a serrated slot is formed in one side of the limiting part close to the needle tail, and the free end of the bracket can be inserted into the slot and abutted against the slot.

Compared with the technical scheme in which the clamping groove is formed in the clamping groove, the clamping groove is directly formed in the limiting part in the technical scheme, the clamping groove and the limiting part can be integrated due to the arrangement, complexity in connection of the clamping plate with the clamping groove and the limiting part is avoided being independently arranged, the width of the whole limiting part is avoided being enlarged due to the arrangement of the clamping plate, included angles formed between the limiting part and the skin of a patient can be reduced in the process of oblique needle insertion, errors of actual needle insertion depth and actual set depth are reduced, the clamping groove in the technical scheme is arranged on the limiting part, and the whole structure and assembly and manufacturing are simpler.

Preferably, as an improvement, the support with the fixed block can be dismantled and be connected, the spacing groove has been seted up on the fixed block top, the one end of support can insert the spacing groove.

So set up, can take out the support from the fixed block, be convenient for installation and dismantlement, thereby be convenient for change or disinfect to the support, and this technical scheme is convenient for take out the support before selling the transportation, avoid installing on the fixed block after owing to receive the collision and lead to appearing coming off or the situation of rupture between support and the fixed block in transit, among this technical scheme, the setting up of spacing groove can play spacing effect to the tip of support, make the support can support the locating part more steadily.

Preferably, as an improvement, the bracket is rotatably connected with the fixing block.

According to the technical scheme, the support is rotatably connected with the fixing block, the angle of the support can be changed conveniently by easily rotating the support after the maximum needle insertion depth of the nerve block needle is changed, the free end of the support is smoothly inserted into the clamping groove and is abutted against the clamping groove, and therefore the limiting part is supported, and the support can be inserted into the clamping groove simply and quickly.

Preferably, as an improvement, a groove is formed in the top end of the fixing block, a fixing rod is fixedly connected in the groove, a hook is fixedly connected to one end, away from the limiting part, of the support, and the hook is hung on the outer side of the fixing rod.

So set up, can enough realize the rotation connected relation of support and fixed block among this technical scheme, can also realize the dismantlement connected relation of support and fixed block simultaneously, to the operation skilled, experienced doctor, or to not needing to carry out under the condition of injecing to the biggest needle-inserting degree of depth, can take off the couple from the dead lever, thereby realize the purpose of taking off the support, slide down the locating part from the needle body simultaneously, thereby when need not to restrict the needle-inserting degree of depth, make the doctor only use the neural needle that hinders to carry out the needle-inserting operation, the application to the neural needle that hinders is more nimble among this technical scheme.

Preferably, as an improvement, the stopper has a circular rod-shaped structure.

Because in the actual medical process, the needle inserting angle of the nerve blocking needle is not limited to the condition of vertical needle inserting, sometimes, doctors can adjust according to the actual condition to ensure that the nerve blocking needle is obliquely inserted, therefore, compared with the situation that the limiting part is arranged into a rectangular plate-shaped structure, the edge of the limiting part and the skin form an included angle in the needle inserting process to cause the needle inserting depth to be less than the actually set depth, the limiting part in the technical scheme is of a circular rod-shaped structure, the limiting part can be more attached to the skin in the needle inserting process, the included angle between the limiting part and the skin of a patient is reduced, and therefore the error between the actually inserted needle depth and the actually set depth is reduced.

Preferably, as an improvement, the fixing member is a fixing member made of rubber.

So set up, the mounting that rubber was made has elastic deformation nature, and it can enough increase and the needle handle between frictional force and avoid the locating part not receiving the pulling of external force and slide and the condition that drops appears on the needle handle, can slide under the effect that receives external force pulling force again simultaneously and change the depth of inserting the needle.

Drawings

Fig. 1 is a front view of a first embodiment of a nerve block needle of the present invention, which facilitates adjustment of the depth of insertion.

Fig. 2 is a top view of a first embodiment of the nerve block needle of the present invention, which facilitates adjustment of the depth of insertion.

Fig. 3 is a front view of a nerve block needle according to a second embodiment of the present invention, which is convenient for adjusting the depth of insertion.

Fig. 4 is a top view of a fixing block in a second embodiment of the nerve block needle of the present invention, which facilitates adjustment of the depth of insertion.

Fig. 5 is a front view of a second bracket of the nerve block needle embodiment for adjusting the depth of insertion.

Fig. 6 is a schematic view of the nerve block needle according to the second embodiment of the present invention, wherein the position-limiting member is slid to adjust the depth of the nerve block needle.

Fig. 7 is a front view of a nerve block needle according to a third embodiment of the present invention, which is convenient for adjusting the depth of insertion.

Fig. 8 is a top view of a fixing block in a third embodiment of the nerve block needle of the present invention, which facilitates adjustment of the depth of insertion.

Fig. 9 is a front view of a fifth embodiment of the nerve block needle of the present invention for adjusting the depth of insertion.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the needle comprises a needle point 1, a needle handle 2, a needle tail 3, a limiting piece 4, a fixing piece 5, a support 6, a fixing block 7, a limiting groove 701, a sliding block 702, a clamping plate 8, a clamping groove 801, a fixing rod 9 and a hook 10.

Example one

The embodiment is basically as shown in the attached figure 1: a nerve block needle convenient for adjusting the needle insertion depth comprises a needle point 1, a needle handle 2 and a needle tail 3, wherein a limiting part 4 is arranged on the needle handle 2 in a sliding mode along the axial direction of the needle handle, the limiting part 4 is perpendicular to the needle handle 2, as shown in figure 2, the limiting part 4 is of a rectangular plate-shaped structure in the embodiment, and the needle point 1 is located in the middle of the limiting part 4.

As shown in fig. 1, a fixing member 5 for increasing the friction force with the needle handle 2 is disposed on a contact portion between the limiting member 4 and the needle handle 2, the fixing member 5 in this embodiment is cylindrical, an outer side wall of the fixing member 5 is bonded and fixed to the limiting member 4, a through hole is disposed in the center of the fixing member 5 along an axial direction, a diameter of the through hole is smaller than a diameter of the needle handle 2, and the fixing member 5 in this embodiment is made of rubber, so that the fixing member 5 has elastic deformation property, because the diameter of the through hole is smaller than the diameter of the needle handle 2, the through hole can be in interference fit with the through hole after the needle handle 2 is inserted into the through hole, the friction force between the fixing member 5 and the needle handle 2 can be increased, the limiting member 4 can be relatively fixed on the needle.

When the needle inserting device is used, medical staff can limit the maximum needle inserting depth by adjusting the position of the limiting part 4 before inserting a needle, and the needle is prevented from being inserted too deeply. For the operation that the puncture target point is shallower than the surface, especially when the puncture target point is a bony structure (for example, the transverse process of a vertebral body serving as the puncture target point in the erector spinae muscle plane block is generally about 1.5-2 cm away from the skin), after the target point position is determined by ultrasonic scanning, a vertical needle feeding point can be marked on the surface of the body, and meanwhile, the length from a limiting part 4 to a needle point 1 is set according to the depth of the needle feeding point. At the moment, the needle is perpendicularly inserted from the mark point, even the ultrasonic guidance is not needed, and the reserved length of the nerve block needle can touch a target point (transverse process of the vertebral body). If the target point is not touched, the deviation of the needle insertion path is considered, and the needle needs to be repositioned for puncture, so that the limiting part 4 limits the maximum needle insertion depth in the embodiment, and the structure that the pleura is punctured by the needle inserted too deeply by accident can be effectively avoided.

For the operation of deeper puncture target points, ultrasonic scanning is also adopted to evaluate the depth of the target points, and the length from the limiting part 4 to the needle point 1 is set. At this time, because the maximum needle inserting depth is limited, even when the position of the puncture needle is required to be adjusted due to unclear ultrasonic development, unnecessary injury caused by carelessly inserting too deep needle by focusing on searching for a nerve block needle in an ultrasonic image is avoided.

Example two

As shown in fig. 3, a nerve block needle which is convenient for adjusting the depth of the needle insertion is different from the first embodiment in that: be equipped with the support 6 that is used for supporting locating part 4 between locating part 4 and the needle tail 3, support 6 is equipped with two, and two supports 6 set up about needle handle 2 symmetry.

Fixedly connected with cardboard 8 on the terminal surface that is close to the backshank 3 on locating part 4, cardboard 8 and locating part 4 integrated into one piece in this embodiment. The bottom of cardboard 8 is seted up and is cockscomb structure's draw-in groove 801, and draw-in groove 801 is logical groove structure, and in this embodiment, the draw-in groove 801 that lies in needle handle 2 both sides on the locating part 4 sets up each other symmetrically.

In this embodiment, two fixing blocks 7 are disposed on the needle tail 3, the fixing blocks 7 are fixedly bonded to the end of the needle tail 3, the two fixing blocks 7 are respectively located on two sides of the needle handle 2, one end of the support 6 is connected to the fixing blocks 7, the other end of the support 6 is a free end, the free end of the support 6 is detachably matched with the limiting member 4, the free end of the support 6 in this embodiment can be inserted into the clamping groove 801 to be abutted against the clamping groove 801, and therefore the detachable matching relationship between the free end of the support 6 and the limiting member 4 is achieved.

Support 6 rotates with fixed block 7 to be connected, and 7 tops of fixed block all are seted up flutedly in this embodiment, as shown in fig. 4, all welded fastening has dead lever 9 in the recess, as shown in fig. 5, the one end that locating part 4 was kept away from to support 6 all welded fastening has couple 10, and couple 10 hangs respectively in the dead lever 9 outside, makes couple 10 can be on dead lever 9 along the circumferential direction of dead lever 9, can also take out support 6 through taking out couple 10 from dead lever 9 simultaneously.

The rotary connection structure of the support 6 and the fixed block 7 can also adopt a pin shaft to realize the rotary connection relationship, namely, the end part of the support 6 is fixed with the pin shaft, and the two ends of the pin shaft are respectively matched with the fixed block 7 in a rotary manner, so that the rotary connection relationship of the support 6 and the fixed block 7 is realized.

When the device is used, as shown in fig. 6, when the maximum needle insertion depth of the nerve block needle needs to be adjusted, the maximum needle insertion depth of the nerve block needle is changed after the sliding limiting member 4 axially slides to a corresponding position along the needle handle 2, and then the bracket 6 is pulled to enable the free end of the bracket 6 to abut against the clamping groove 801 at the corresponding position on the limiting member of the clamping plate 8, because the clamping groove 801 on the limiting member of the clamping plate 8 is in a sawtooth shape, that is, the clamping plate 8 is provided with a plurality of clamping grooves 801 which form a sawtooth shape, and therefore, when the free end of the bracket 6 abuts against the clamping groove 801 on the limiting member 4, the clamping groove 801 at the corresponding position should be selected as required, so that the bracket 6 can effectively support the limiting member 4, and the situation that the limiting member 4 slides backwards due to stress during needle insertion is avoided.

EXAMPLE III

As shown in fig. 7, a nerve block needle which facilitates to adjust the depth of the needle insertion is different from the second embodiment in that: in this embodiment, another detachable connection manner between the bracket 6 and the fixing block 7 is provided, specifically, as shown in fig. 8, a limiting groove 701 is formed at the top end of the fixing block 7, and one end of the bracket 6, which is far away from the limiting member 4, can be inserted into the limiting groove 701. Sliding fit has slider 702 in the spacing groove 701, slider 702 and spacing groove 701 sliding friction fit, has frictional force between the lateral wall of slider 702 and spacing groove 701 promptly, needs to use great power just to promote slider 702 and slides, thereby makes slider 702 can remain motionless after sliding, thereby effectually spacing support 6, through sliding slider 702 in this embodiment, make support 6 insert behind the spacing groove 701, spacing support 6 carries out.

During the use, after the maximum needle inserting depth of the nerve block needle is adjusted by sliding the limiting part 4, the bottom end of the bracket 6 is inserted into the limiting groove 701, and the other end of the bracket 6 is inserted into the clamping groove 801, so that the bracket 6 is limited and fixed, the bracket 6 plays a supporting role for the limiting part 4, and the situation that the limiting part 4 slides backwards due to stress when the needle is inserted is avoided.

Can take out support 6 from fixed block 7 in this embodiment, be convenient for installation and dismantlement to be convenient for change or disinfect to support 6, and can be convenient for take out support 6 before selling the transportation in this embodiment, avoid installing on fixed block 7 after the transportation owing to receive the collision and lead to appearing dropping or the condition of appearing the rupture between support 6 and the fixed block 7.

Example four

The difference between this embodiment and the second embodiment is: because in the actual medical process, the needle inserting angle of the nerve blocking needle is not limited to the situation of vertical needle inserting, sometimes, a doctor can adjust according to the actual situation to make the nerve blocking needle obliquely inserted, and the limiting member in the embodiment is in a circular rod-shaped structure. Therefore, the limiting member in the embodiment can be adapted to different needle insertion angles.

EXAMPLE five

As shown in fig. 9, a nerve block needle which facilitates adjustment of the depth of insertion differs from the fourth embodiment in that: in this embodiment, a serrated slot 801 is formed in one side of the circular rod-shaped limiting member 4 close to the needle tail 3, such arrangement can integrate the slot 801 and the limiting member 4, and can avoid widening the needle insertion width of the limiting member 4 due to the arrangement of the clamping plate, thereby further reducing the included angle formed between the edge of the limiting member 4 and the skin of a patient when the needle is inserted obliquely, and further reducing the error between the actual needle insertion depth and the actual set depth.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (9)

1. The utility model provides a neural blocking needle convenient to adjust needle insertion depth, includes needle point, needle handle and needle tail, its characterized in that: the needle handle is provided with a limiting part along the axial sliding direction, the limiting part is provided with a fixing part for increasing the friction force with the needle handle at the position where the needle handle contacts with the limiting part, and a support for supporting the limiting part is arranged between the limiting part and the needle tail.

2. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 1, wherein: the needle is characterized in that two fixing blocks are arranged on the needle tail and located on two sides of the needle handle respectively, one end of the support is connected with the fixing blocks, the other end of the support is a free end, and the free end of the support is detachably matched with the limiting part.

3. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 2, wherein: the end face, close to the needle tail, of the limiting part is provided with a clamping plate, a clamping groove in a sawtooth shape is formed in the clamping plate, and the free end of the support can be inserted into the clamping groove and abuts against the clamping groove.

4. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 2, wherein: one side of the limiting part, which is close to the needle tail, is provided with a serrated clamping groove, and the free end of the support can be inserted into the clamping groove and is abutted against the clamping groove.

5. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 2, wherein: the support with the fixed block can be dismantled and be connected, the spacing groove has been seted up on the fixed block top, the one end of support can insert the spacing groove.

6. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 2, wherein: the bracket is rotatably connected with the fixed block.

7. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 6, wherein: the top end of the fixing block is provided with a groove, a fixing rod is fixedly connected in the groove, one end, far away from the limiting part, of the support is fixedly connected with a hook, and the hook is hung on the outer side of the fixing rod.

8. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 1, wherein: the limiting piece is of a circular rod-shaped structure.

9. The nerve block needle convenient for adjusting the depth of the needle insertion according to claim 1, wherein: the fixing piece is made of rubber.

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