Clamping device for optical fiber pin and micro-injection catheter

Abstract

An optical fiber inserting needle and micro-injection catheter clamping device comprises a rotary fixing rod, the upper end of the rotary fixing rod is connected with a brain stereotaxic instrument, the lower end of the rotary fixing rod is connected with the upper end of a clamping device outer frame, and an inner clamping plate is movably arranged in the clamping device outer frame. A first micro-injection catheter vertical groove is formed below the rotary fixing rod and in the middle of the inner side face of the holder outer frame, a first optical fiber clamping groove with a protective sleeve is formed in one side of the first micro-injection catheter vertical groove, and a first optical fiber clamping groove without a protective sleeve is formed in the other side of the first micro-injection catheter vertical groove; a bolt hole is formed in the opposite surface of the slotted surface of the holder outer frame, and a fastening bolt is connected in the bolt hole; the angle of the device is adjusted by rotating the fixing rod, optical fiber recording contact pins and micro-injection catheters can be embedded at the same time by arranging the optical fiber recording contact pin grooves and the micro-injection catheter grooves at different intervals, and the device has the advantages of being high in functionality, simple and reasonable in space structure, flexible, small and exquisite.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical, biological discipline research instrument technical field, concretely relates to a kind of optical fiber insertion needle and microinjection catheter holder. BACKGROUND

[0002] In the method of studying calcium activity of neuron, the most common experimental method is optical fiber recording, and its use method is to place optical fiber on the upper part of target nucleus group and fix on the surface of skull of experimental animal. At the same time, many studies also want to give drug stimulation to neuron in target nucleus group or adjacent nucleus group, change calcium activity and collect the change of calcium activity through optical fiber recording. However, compared with adjacent or adjacent nucleus group, the existing holder of optical fiber recording insertion needle and microinjection catheter is too large in size, and cannot clamp and fix optical fiber recording insertion needle and microinjection catheter in turn. However, many interacting nucleus groups in neural research are very close. The existing experimental device and experimental method seriously limit the development of this kind of experiment. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model aims at providing an optical fiber insertion needle and microinjection catheter holder, which can simultaneously bury the optical fiber recording insertion needle and the microinjection catheter by adjusting the angle of the device through the rotating fixing rod and setting the optical fiber recording insertion needle groove and the microinjection catheter groove with different distances, and has the characteristics of strong functionality, simple and reasonable space structure, flexibility and small size.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] An optical fiber insertion needle and microinjection catheter holder, comprising a rotating fixing rod 1, the upper end of the rotating fixing rod 1 is connected with a brain stereotaxic apparatus, the lower end of the rotating fixing rod 1 is connected with the upper end of a holder outer frame 2, and an inner clamping plate 3 is movably arranged in the holder outer frame 2; a first microinjection catheter vertical groove 4 is formed in the middle of the inner side surface of the holder outer frame 2 below the rotating fixing rod 1, a first optical fiber clamping groove 5 with a protective sleeve is arranged on one side of the first microinjection catheter vertical groove 4, and a second optical fiber clamping groove 6 without a protective sleeve is arranged on the other side; a bolt hole 7 is arranged on the opposite side of the slotted surface of the holder outer frame 2, and a fastening bolt is connected in the bolt hole 7.

[0006] One side of the inner clamping plate 3 is respectively provided with a second microinjection catheter vertical groove 9, a third optical fiber clamping groove 10 with a protective sleeve and a fourth optical fiber clamping groove 11 without a protective sleeve, which are matched with the first microinjection catheter vertical groove 4, the first optical fiber clamping groove 5 with a protective sleeve and the second optical fiber clamping groove 6 without a protective sleeve.

[0007] The first micro-injection catheter vertical groove 4, the first optical fiber clamping groove with protective sleeve 5 and the second optical fiber clamping groove without protective sleeve 6 are parallel to each other; the second micro-injection catheter vertical groove 9, the third optical fiber clamping groove with protective sleeve 10 and the fourth optical fiber clamping groove without protective sleeve 11 are parallel to each other.

[0008] When the fastening bolt is tightened, the inner clamping plate 3 and the slotted surface of the clamping device outer frame 2 are clamped relative to each other.

[0009] The beneficial effects of the utility model are as follows:

[0010] 1. The device can simultaneously send the optical fiber pin and the drug delivery catheter into the similar or same nuclear group of the mouse, and solves the problem that the existing clamping device cannot do.

[0011] 2. The micro-injection catheter vertical groove and the optical fiber clamping groove of the device can be customized to adapt to the length of the optical fiber pin and the length of the drug delivery catheter.

[0012] 3. The device can be customized with different groove spacings to adapt to the spacing between different optical fiber pins and drug delivery catheters, so that adjacent nuclear group drug delivery and optical fiber recording are possible at different distances.

[0013] In summary, the utility model has the advantages of full function, simple and reasonable space structure, flexibility and small size. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the overall isometric view of the utility model.

[0015] Fig. 2 It is the schematic view of the clamping device outer frame of the utility model.

[0016] Fig. 3 It is the schematic view of the inner clamping plate 3 of the utility model.

[0017] Among them: 1-rotary fixed rod;2-clamping device outer frame;3-inner clamping plate;4-first micro-injection catheter vertical groove;5-first optical fiber clamping groove with protective sleeve;6-second optical fiber clamping groove without protective sleeve;7-bolt hole;9-second micro-injection catheter vertical groove;10-third optical fiber clamping groove with protective sleeve;11-fourth optical fiber clamping groove without protective sleeve. DETAILED DESCRIPTION

[0018] The utility model will be further described in detail in combination with the drawings.

[0019] Reference Figs. 1 to 3A kind of optical fiber pin and microinjection catheter holder, including rotating fixed rod 1, the upper end of the rotating fixed rod 1 is connected with brain stereotaxis, the lower end of rotating fixed rod 1 is connected with the upper end of holder outer frame 2, and inner clamping plate 3 is movably arranged in holder outer frame 2;First microinjection catheter vertical slot 4 is opened in the middle of the lower side of rotating fixed rod 1 and the inner side of holder outer frame 2, and first optical fiber clamping groove 5 with protective sleeve is arranged on one side of first microinjection catheter vertical slot 4, and second optical fiber clamping groove 6 without protective sleeve is arranged on the other side;The opposite side of the slotted surface of holder outer frame 2 is provided with bolt hole 7, and fastening bolt is connected in bolt hole 7.

[0020] One side of the inner clamping plate 3 is respectively provided with second microinjection catheter vertical slot 9, third optical fiber clamping groove 10 with protective sleeve and fourth optical fiber clamping groove 11 without protective sleeve, which are matched with first microinjection catheter vertical slot 4, first optical fiber clamping groove 5 with protective sleeve and second optical fiber clamping groove 6 without protective sleeve.

[0021] First microinjection catheter vertical slot 4, first optical fiber clamping groove 5 with protective sleeve and second optical fiber clamping groove 6 without protective sleeve are parallel to each other;Second microinjection catheter vertical slot 9, third optical fiber clamping groove 10 with protective sleeve and fourth optical fiber clamping groove 11 without protective sleeve are parallel to each other.Microinjection catheter vertical slot and optical fiber clamping groove can be customized to adapt to different lengths of optical fiber pin and the length of the administration catheter;Different slot spacing can also be customized to adapt to the distance between different optical fiber pins and administration catheters, so that adjacent nuclear group administration and optical fiber recording are possible at different distances.

[0022] When the fastening bolt is tightened, the inner clamping plate 3 and the slotted surface of the holder outer frame 2 are relatively clamped.

[0023] The working principle of the utility model is:

[0024] The device is used in combination with the existing brain stereotactic holder, the rotating fixed rod 1 on the device main body is connected with the holder and the brain stereotactic device, and the optical fiber pin and the administration catheter are inserted into the optical fiber pin clamping groove and the microinjection catheter vertical slot, the inner clamping plate 3 is placed opposite to clamp the optical fiber pin and the administration catheter, and the inner clamping plate 3 is pushed to the optical fiber pin and the administration catheter by rotating the fastening bolt in the bolt hole 7 of the main body to clamp them. Subsequently, the optical fiber pin and the administration catheter can be sent to the mouse brain by the brain stereotactic device. After being put in, the optical fiber pin and the administration catheter are fixed on the mouse skull using dental cement, and then the screw is loosened, the holder can be loosened and taken out, and the optical fiber pin and the administration catheter are still stably kept in the mouse brain.

[0025] The utility model discloses can realize the utility model with other specific form without departing from the basic characteristics of the utility model. Therefore, the utility model embodiment should be regarded as exemplary and non-restrictive, and the scope of the utility model is determined by the appended claims, and all changes falling within the meaning and scope of the equivalent elements of the claims are included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. An optical fiber ferrule and microinjection catheter holder comprising a rotating fixed bar (1), characterized in that, The upper end of the rotating fixed rod (1) is connected with a brain stereotactic apparatus, the lower end of the rotating fixed rod (1) is connected with the upper end of the holder outer frame (2), and the inner holder plate (3) is movably arranged in the holder outer frame (2); a first micro-injection catheter vertical groove (4) is formed in the middle of the lower side of the rotating fixed rod (1) and the inner side surface of the holder outer frame (2), a first optical fiber clamping groove (5) with a protective sleeve is arranged on one side of the first micro-injection catheter vertical groove (4), and a second optical fiber clamping groove (6) without a protective sleeve is arranged on the other side; the opposite side of the slotted surface of the holder outer frame (2) is provided with a bolt hole (7), and the bolt hole (7) is connected with a fastening bolt.

2. A fiber optic ferrule and micro-injection catheter holder according to claim 1, wherein, One surface of the inner holder plate (3) is respectively provided with a second micro-injection catheter vertical groove (9), a third optical fiber clamping groove (10) with a protective sleeve and a fourth optical fiber clamping groove (11) without a protective sleeve, which are matched with the first micro-injection catheter vertical groove (4), the first optical fiber clamping groove (5) with a protective sleeve and the second optical fiber clamping groove (6) without a protective sleeve.

3. A fiber optic ferrule and micro-injection catheter holder according to claim 2, wherein, The first micro-injection catheter vertical groove (4), the first optical fiber clamping groove (5) with a protective sleeve and the second optical fiber clamping groove (6) without a protective sleeve are parallel to each other; the second micro-injection catheter vertical groove (9), the third optical fiber clamping groove (10) with a protective sleeve and the fourth optical fiber clamping groove (11) without a protective sleeve are parallel to each other.

4. A fiber optic ferrule and micro-injection catheter holder according to claim 1, wherein, When the fastening bolt is tightened, the slotted surfaces of the inner holder plate (3) and the holder outer frame (2) are relatively clamped.

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