A cold stimulation device for rehabilitation treatment of dysphagia
The detachable connection design between the rotary joint and the injection unit solves the problems of cumbersome operation and unstable connection when changing ice water in existing cold stimulation devices, achieving rapid separation and sealing connection, and ensuring the stability and safety of cold stimulation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHANG FIRST HOSPITAL
- Filing Date
- 2025-04-22
- Publication Date
- 2026-07-03
AI Technical Summary
Existing cold stimulation devices are cumbersome to operate when changing ice water, the threaded connection may loosen and cause temperature instability, and the hollow stainless steel rod is in direct contact with the oral cavity, posing a risk of falling off.
The design features a detachable connection between the rotary joint and the injection unit, combined with a sealing ring and a spherical connector, enabling quick separation and sealing. It also allows the hollow stainless steel rod to rotate at a certain angle, facilitating operation.
It achieves convenient and airtight ice water replacement, ensuring stability and safety during cold stimulation, and avoiding the risk of loosening and falling off of threaded connections.
Smart Images

Figure CN224441568U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical assistive devices, specifically relating to a cold stimulation device for the rehabilitation treatment of swallowing disorders. Background Technology
[0002] Dysphagia is a common complication of stroke. Currently, clinical practice involves stimulating the pharynx with ice-cold cotton swabs to enhance the sensitivity of the soft palate and pharynx, thereby improving the patient's attention to food swallowing. Furthermore, cold stimulation increases sensory input, excites neurons in the conduction pathway, promotes axonal regeneration, rebuilds the neural network, and facilitates the recovery of swallowing function. Ice stimulation can also activate nerve functions in a reserve or dormant state, regulate nerve excitability and the coordination of swallowing muscles, which helps improve the sensitivity of the pharyngeal reflex area, prevent choking, trigger swallowing movements, promote the recovery of the swallowing reflex arc, and ultimately improve swallowing function.
[0003] Patent CN216294420U discloses a cold stimulation device for the pharynx in patients with swallowing disorders. The device includes a hollow stainless steel rod with an annular groove on the outer wall of its front end. The front end of the rod is hemispherical. The rear end of the rod is detachably connected to a sealing cap or a syringe for injecting ice water. A water outlet hole, communicating with the inner cavity of the rod, is provided on the outer wall of the front end. The outer wall of the rod has external threads located behind the annular groove. While this device allows for the injection of ice water via a syringe for stimulating the pharynx, the threaded connection must be disassembled when changing the ice water, which is cumbersome and may affect the low-temperature retention effect, leading to unstable stimulation temperature. Furthermore, since the hollow stainless steel rod is in direct contact with the oral cavity, the threaded connection may loosen and detach during treatment. Utility Model Content
[0004] To address the aforementioned shortcomings in the existing technology, this utility model provides a cold stimulation device for the rehabilitation treatment of swallowing disorders, thereby solving the problems mentioned in the background technology.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a cold stimulation device for rehabilitation treatment of swallowing disorders, comprising a hollow stainless steel rod, a massage head provided at the front end of the hollow stainless steel rod, a plurality of annular grooves equally spaced on the massage head, a water outlet hole communicating with the inner cavity of the hollow stainless steel rod being opened at the bottom of the annular grooves, a spherical connecting part provided at the tail end of the hollow stainless steel rod, the spherical connecting part being connected to a rotary joint, the rotary joint being connected to an injection part, the injection part including an injection port and a connecting piece, the injection part being detachably connected to the rotary joint.
[0006] Preferably, the end face of the connecting part is provided with a connecting hole for inserting the connector, and a rectangular through hole is provided in the vertical direction of the connecting hole. A locking block is fitted inside the through hole, and a thin rod is connected to the top of the locking block. A spring is sleeved on the thin rod and a limiter is connected to the top end.
[0007] Preferably, the rotary joint has a hollow structure, including a detachable end cap that can be inserted into a spherical connecting part, and a connecting part for connecting the hollow stainless steel rod and the injection part.
[0008] Preferably, a sealing seat is provided at the connection between the connecting part and the spherical connecting part, a second sealing ring is provided at the connection between the connecting part and the injection part, and a first sealing ring is provided at the connection between the end cap and the hollow stainless steel rod.
[0009] Preferably, the hollow stainless steel rod is made of food-grade stainless steel.
[0010] Compared with the prior art, this utility model has the following advantages:
[0011] 1. The detachable connection design between the rotary joint and the injection unit allows for quick separation and sealing when changing chilled water without disassembling the threaded structure.
[0012] 2. A rotary joint is used to connect the hollow stainless steel rod, which can rotate at a certain angle during use, facilitating operation during treatment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the injection section of this utility model;
[0015] Figure 3 for Figure 1 Enlarged view of point A in the middle;
[0016] Figure 4 for Figure 1 Enlarged view of section B in the middle.
[0017] The reference numerals in the accompanying drawings include:
[0018] 1-Hollow stainless steel rod, 11-Spherical connecting part, 12-Massage head, 2-Injection part, 21-Injection port, 22-Connecting part, 3-Rotary joint, 31-End cap, 32-Connecting part, 33-First sealing ring, 34-Sealing seat, 35-Connecting hole, 36-Limiting part, 361-Spring, 362-Clocking block, 37-Second sealing ring. Detailed Implementation
[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] like Figure 1-4 As shown, this utility model discloses a cold stimulation device for the rehabilitation treatment of dysphagia, comprising a hollow stainless steel rod 1, a massage head 12 at the front end of the hollow stainless steel rod 1, a plurality of annular grooves evenly spaced on the massage head 12, and a water outlet hole communicating with the inner cavity of the hollow stainless steel rod 1 at the bottom of the annular grooves. A spherical connecting part 11 is provided at the tail end of the hollow stainless steel rod 1, the spherical connecting part 11 is connected to a rotary joint 3, the rotary joint 3 is connected to an injection part 2, the injection part 2 includes an injection port 21 and a connecting piece 22, and the injection part 2 and the rotary joint 3 are detachably connected.
[0024] Specifically, during use, ice water is injected into the hollow stainless steel rod 1 through the injection section 2, thereby stimulating the pharynx with ice water. The groove on the front massage head 12 can massage the pharynx.
[0025] Furthermore, the end face of the connecting part 32 is provided with a connecting hole 35 for inserting the connector 22. A rectangular through hole is provided in the vertical direction of the connecting hole 35. A locking block 365 is fitted inside the through hole. A thin rod is connected to the top of the locking block 365. A spring 361 is sleeved on the thin rod and a limiting member 36 is connected to the top end.
[0026] Specifically, refer to Figure 4 A connecting hole 35 is provided on the right end face of the connecting part 32. The connecting hole 35 is a rectangular blind hole. A vertically arranged rectangular through hole passes through the connecting hole 35 and the outer surface of the connecting part 32. The locking block 365 cooperates with the rectangular through hole to realize the insertion and fixation of the injection part 2. The connecting piece 22 is hook-shaped. When it is inserted, its hook will abut against the locking block 365. The locking block 365 moves upward. When the connecting piece 22 is fully inserted, its hook no longer abuts against the locking block 365. At this time, the locking block 365 is reset under the action of the spring 361. The upper opening of the rectangular through hole is smaller than the lower opening. The lower opening can accommodate and allow the locking block 365 to protrude. The upper opening is clearance-fitted with the thin rod of the locking block 365. The top of the thin rod extends to the outer surface of the connecting part 32 and fixes the limiting member 36. The limiting member 36 plays a limiting role for the locking block 365. When it contacts the outer surface of the connecting part 32, the locking block 365 resets. When the injection unit needs to be disassembled, simply lift the two symmetrically arranged limiting members 36 at the same time so that the locking block 365 disengages from the connecting member 22, and the injection unit can be pulled out. This allows for quick separation and sealing connection when changing the ice water.
[0027] Furthermore, the rotary joint 3 has a hollow structure, including an end cap 31 that can be detached and inserted into the spherical connecting part 11, and a connecting part 32 for connecting the hollow stainless steel rod 1 and the injection part 2.
[0028] Specifically, the split design of the rotary joint 3 facilitates cleaning and maintenance, while the hollow structure ensures smooth flow of ice water. During use, the hollow stainless steel rod 1 can rotate at a certain angle, facilitating operation during the treatment process.
[0029] Furthermore, a sealing seat 34 is provided at the connection point between the connecting part 32 and the spherical connecting part 11, a second sealing ring 37 is provided at the connection point with the injection part 2, and a first sealing ring 33 is provided at the connection point between the end cap 31 and the hollow stainless steel rod 1.
[0030] Specifically, the combination design of the sealing seat 34 and multiple sealing rings effectively prevents ice water leakage, maintains low temperature stability, and ensures the continuity and safety of the cold stimulation effect.
[0031] Furthermore, the hollow stainless steel rod 1 is made of food-grade stainless steel.
[0032] Specifically, food-grade stainless steel can avoid the risk of allergies or contamination when patients come into contact with the material.
[0033] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A cold stimulation device for rehabilitation treatment of dysphagia comprising a hollow stainless steel rod (1), characterized in that: The hollow stainless steel rod (1) is provided with a massage head (12) at its front end. The massage head (12) is provided with several annular grooves at equal intervals. The bottom of the annular grooves is provided with a water outlet that communicates with the inner cavity of the hollow stainless steel rod (1). The hollow stainless steel rod (1) is provided with a spherical connecting part (11) at its rear end. The spherical connecting part (11) is connected to a rotary joint (3). The rotary joint (3) is connected to an injection part (2). The injection part (2) includes an injection port (21) and a connector (22). The injection part (2) and the rotary joint (3) are detachably connected.
2. A cold stimulation device for rehabilitation therapy of dysphagia according to claim 1, characterized in that: The end face of the connecting part (32) is provided with a connecting hole (35) for inserting the connector (22). A rectangular through hole is provided in the vertical direction of the connecting hole (35). A locking block (365) is fitted in the through hole. A thin rod is connected to the top of the locking block (365). A spring (361) is sleeved on the thin rod and a limiting member (36) is connected to the top end.
3. The cold stimulation device for rehabilitation therapy of dysphagia according to claim 1, characterized in that: The rotary joint (3) has a hollow structure, including an end cap (31) that can be detached and inserted into a spherical connecting part (11), and a connecting part (32) for connecting the hollow stainless steel rod (1) and the injection part (2).
4. The cold stimulation device for rehabilitation therapy of dysphagia according to claim 1, characterized in that: A sealing seat (34) is provided at the connection between the connecting part (32) and the spherical connecting part (11), a second sealing ring (37) is provided at the connection between the connecting part (2), and a first sealing ring (33) is provided at the connection between the end cap (31) and the hollow stainless steel rod (1).
5. The cold stimulation device for rehabilitation therapy of dysphagia according to claim 1, characterized in that: The hollow stainless steel rod (1) is made of food-grade stainless steel.